315012640 has 24 divisors (see below), whose sum is σ = 744217740. Its totient is φ = 126004992.

The previous prime is 315012569. The next prime is 315012673. The reversal of 315012640 is 46210513.

It can be written as a sum of positive squares in 2 ways, for example, as 294328336 + 20684304 = 17156^2 + 4548^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 984255 + ... + 984574.

Almost surely, 2^315012640 is an apocalyptic number.

It is an amenable number.

315012640 is an abundant number, since it is smaller than the sum of its proper divisors (429205100).

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

315012640 is a wasteful number, since it uses less digits than its factorization.

315012640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968844 (or 1968836 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 315012640 is about 17748.5954373860. The cubic root of 315012640 is about 680.4183123968.

The spelling of 315012640 in words is "three hundred fifteen million, twelve thousand, six hundred forty".