Search a number
-
+
228472470 = 23253078269
BaseRepresentation
bin11011001111000…
…11011010010110
3120220220121022100
431213203122112
5431442104340
634400542530
75442661332
oct1547433226
9526817270
10228472470
11107a6a826
1264621a46
1338445c15
14224b47c2
15150d0830
hexd9e3696

228472470 has 48 divisors (see below), whose sum is σ = 596035440. Its totient is φ = 60720192.

The previous prime is 228472457. The next prime is 228472471. The reversal of 228472470 is 74274822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228472471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23496 + ... + 31764.

It is an arithmetic number, because the mean of its divisors is an integer number (12417405).

Almost surely, 2228472470 is an apocalyptic number.

228472470 is an abundant number, since it is smaller than the sum of its proper divisors (367562970).

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

228472470 is a wasteful number, since it uses less digits than its factorization.

228472470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8589 (or 8586 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 228472470 is about 15115.3058189373. The cubic root of 228472470 is about 611.3331677017. Note that the first 3 decimals are identical.

The spelling of 228472470 in words is "two hundred twenty-eight million, four hundred seventy-two thousand, four hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 307 614 921 1535 1842 2763 3070 4605 5526 8269 9210 13815 16538 24807 27630 41345 49614 74421 82690 124035 148842 248070 372105 744210 2538583 5077166 7615749 12692915 15231498 22847247 25385830 38078745 45694494 76157490 114236235 228472470