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252033870 = 23511763739
BaseRepresentation
bin11110000010110…
…11101101001110
3122120020122110210
433001123231032
51004010040440
641001543250
76150152424
oct1701335516
9576218423
10252033870
1111a2a2860
12704a4b26
13402a538a
1425689114
15171d6a80
hexf05bb4e

252033870 has 32 divisors (see below), whose sum is σ = 659871360. Its totient is φ = 61099040.

The previous prime is 252033853. The next prime is 252033871. The reversal of 252033870 is 78330252.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252033871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381540 + ... + 382199.

It is an arithmetic number, because the mean of its divisors is an integer number (20620980).

Almost surely, 2252033870 is an apocalyptic number.

252033870 is an abundant number, since it is smaller than the sum of its proper divisors (407837490).

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

252033870 is a wasteful number, since it uses less digits than its factorization.

252033870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763760.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 252033870 is about 15875.5746352691. The cubic root of 252033870 is about 631.6642567915.

The spelling of 252033870 in words is "two hundred fifty-two million, thirty-three thousand, eight hundred seventy".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 763739 1527478 2291217 3818695 4582434 7637390 8401129 11456085 16802258 22912170 25203387 42005645 50406774 84011290 126016935 252033870