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472781250 = 23256412
BaseRepresentation
bin11100001011100…
…001000111000010
31012221121202221200
4130023201013002
51432013000000
6114525202030
714500400664
oct3413410702
91187552850
10472781250
11222966607
12112400316
1376c45026
1446b0c534
152b78d500
hex1c2e11c2

472781250 has 126 divisors (see below), whose sum is σ = 1312424607. Its totient is φ = 123000000.

The previous prime is 472781213. The next prime is 472781273. The reversal of 472781250 is 52187274.

It can be written as a sum of positive squares in 11 ways, for example, as 453306681 + 19474569 = 21291^2 + 4413^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=15375.

It is a super-2 number, since 2×4727812502 = 447044220703125000, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 11531230 + ... + 11531270.

Almost surely, 2472781250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 472781250

472781250 is an abundant number, since it is smaller than the sum of its proper divisors (839643357).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

472781250 is an frugal number, since it uses more digits than its factorization.

472781250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 472781250 is about 21743.5335214863. The cubic root of 472781250 is about 779.0286231403.

The spelling of 472781250 in words is "four hundred seventy-two million, seven hundred eighty-one thousand, two hundred fifty".

Divisors: 1 2 3 5 6 9 10 15 18 25 30 41 45 50 75 82 90 123 125 150 205 225 246 250 369 375 410 450 615 625 738 750 1025 1125 1230 1250 1681 1845 1875 2050 2250 3075 3125 3362 3690 3750 5043 5125 5625 6150 6250 8405 9225 9375 10086 10250 11250 15129 15375 15625 16810 18450 18750 25215 25625 28125 30258 30750 31250 42025 46125 46875 50430 51250 56250 75645 76875 84050 92250 93750 126075 128125 140625 151290 153750 210125 230625 252150 256250 281250 378225 384375 420250 461250 630375 640625 756450 768750 1050625 1153125 1260750 1281250 1891125 1921875 2101250 2306250 3151875 3782250 3843750 5253125 5765625 6303750 9455625 10506250 11531250 15759375 18911250 26265625 31518750 47278125 52531250 78796875 94556250 157593750 236390625 472781250