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315430490 = 25197160117
BaseRepresentation
bin10010110011010…
…001011001011010
3210222112112021202
4102303101121122
51121222233430
651144434202
710550054264
oct2263213132
9728475252
10315430490
11152063661
1289778962
135047137b
142dc6cb34
151ca5ad45
hex12cd165a

315430490 has 16 divisors (see below), whose sum is σ = 570660552. Its totient is φ = 125530944.

The previous prime is 315430469. The next prime is 315430519. The reversal of 315430490 is 94034513.

It can be written as a sum of positive squares in 4 ways, for example, as 292033921 + 23396569 = 17089^2 + 4837^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78089 + ... + 82028.

Almost surely, 2315430490 is an apocalyptic number.

315430490 is a deficient number, since it is larger than the sum of its proper divisors (255230062).

315430490 is a wasteful number, since it uses less digits than its factorization.

315430490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160321.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 315430490 is about 17760.3628904367. The cubic root of 315430490 is about 680.7190274994.

The spelling of 315430490 in words is "three hundred fifteen million, four hundred thirty thousand, four hundred ninety".

Divisors: 1 2 5 10 197 394 985 1970 160117 320234 800585 1601170 31543049 63086098 157715245 315430490