578402540 has 24 divisors (see below), whose sum is σ = 1215209520. Its totient is φ = 231253568.

The previous prime is 578402533. The next prime is 578402567. The reversal of 578402540 is 45204875.

It is a self number, because there is not a number n which added to its sum of digits gives 578402540.

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, 48491 + ... + 59229.

It is an arithmetic number, because the mean of its divisors is an integer number (50633730).

Almost surely, 2^578402540 is an apocalyptic number.

It is an amenable number.

578402540 is an abundant number, since it is smaller than the sum of its proper divisors (636806980).

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

578402540 is a wasteful number, since it uses less digits than its factorization.

578402540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13441 (or 13439 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 578402540 is about 24050.0008316008. Note that the first 3 decimals coincide. The cubic root of 578402540 is about 833.1887496717.

The spelling of 578402540 in words is "five hundred seventy-eight million, four hundred two thousand, five hundred forty".