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315255052 = 22771347457
BaseRepresentation
bin10010110010100…
…110100100001100
3210222012121122001
4102302212210030
51121201130202
651141002044
710545423640
oct2262464414
9728177561
10315255052
11151a53872
12896b3324
135040c568
142dc24c20
151ca23d87
hex12ca690c

315255052 has 48 divisors (see below), whose sum is σ = 642636288. Its totient is φ = 132531840.

The previous prime is 315255047. The next prime is 315255071. The reversal of 315255052 is 250552513.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 315255052.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 689608 + ... + 690064.

It is an arithmetic number, because the mean of its divisors is an integer number (13388256).

Almost surely, 2315255052 is an apocalyptic number.

It is an amenable number.

315255052 is an abundant number, since it is smaller than the sum of its proper divisors (327381236).

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

315255052 is a wasteful number, since it uses less digits than its factorization.

315255052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886 (or 884 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 315255052 is about 17755.4231715271. The cubic root of 315255052 is about 680.5928019801.

The spelling of 315255052 in words is "three hundred fifteen million, two hundred fifty-five thousand, fifty-two".

Divisors: 1 2 4 7 14 28 71 142 284 347 457 497 694 914 994 1388 1828 1988 2429 3199 4858 6398 9716 12796 24637 32447 49274 64894 98548 129788 158579 172459 227129 317158 344918 454258 634316 689836 908516 1110053 2220106 4440212 11259109 22518218 45036436 78813763 157627526 315255052