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252510372 = 2234779353
BaseRepresentation
bin11110000110100…
…00000010100100
3122121010212010000
433003100002210
51004120312442
641020101300
76154205562
oct1703200244
9577125100
10252510372
1111a598864
1270694830
134041122a
1425770a32
151727cd4c
hexf0d00a4

252510372 has 30 divisors (see below), whose sum is σ = 660112838. Its totient is φ = 84170016.

The previous prime is 252510347. The next prime is 252510373. The reversal of 252510372 is 273015252.

It can be written as a sum of positive squares in only one way, i.e., 174081636 + 78428736 = 13194^2 + 8856^2 .

It is a super-2 number, since 2×2525103722 = 127522975935156768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (252510373) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 389353 + ... + 390000.

Almost surely, 2252510372 is an apocalyptic number.

It is an amenable number.

252510372 is an abundant number, since it is smaller than the sum of its proper divisors (407602466).

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

252510372 is a wasteful number, since it uses less digits than its factorization.

252510372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779369 (or 779358 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 252510372 is about 15890.5749423990. The cubic root of 252510372 is about 632.0620866474.

The spelling of 252510372 in words is "two hundred fifty-two million, five hundred ten thousand, three hundred seventy-two".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 108 162 324 779353 1558706 2338059 3117412 4676118 7014177 9352236 14028354 21042531 28056708 42085062 63127593 84170124 126255186 252510372