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252774310 = 2531815401
BaseRepresentation
bin11110001000100…
…00011110100110
3122121122021011111
433010100132212
51004202234220
641025455234
76156355225
oct1704203646
9577567144
10252774310
1111a759098
12707a151a
13404a43c9
14257dccbc
15172d115a
hexf1107a6

252774310 has 16 divisors (see below), whose sum is σ = 469671552. Its totient is φ = 97848000.

The previous prime is 252774293. The next prime is 252774311. The reversal of 252774310 is 13477252.

It is a super-2 number, since 2×2527743102 = 127789703591952200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252774311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407391 + ... + 408010.

It is an arithmetic number, because the mean of its divisors is an integer number (29354472).

Almost surely, 2252774310 is an apocalyptic number.

252774310 is a deficient number, since it is larger than the sum of its proper divisors (216897242).

252774310 is a wasteful number, since it uses less digits than its factorization.

252774310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815439.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 252774310 is about 15898.8776333425. The cubic root of 252774310 is about 632.2822322074.

The spelling of 252774310 in words is "two hundred fifty-two million, seven hundred seventy-four thousand, three hundred ten".

Divisors: 1 2 5 10 31 62 155 310 815401 1630802 4077005 8154010 25277431 50554862 126387155 252774310