390561530 has 32 divisors (see below), whose sum is σ = 741182400. Its totient is φ = 147768192.

The previous prime is 390561517. The next prime is 390561547. The reversal of 390561530 is 35165093.

It is a Curzon number.

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, 162014 + ... + 164406.

It is an arithmetic number, because the mean of its divisors is an integer number (23161950).

Almost surely, 2^390561530 is an apocalyptic number.

390561530 is a deficient number, since it is larger than the sum of its proper divisors (350620870).

390561530 is a wasteful number, since it uses less digits than its factorization.

390561530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278.

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 390561530 is about 19762.6296327184. The cubic root of 390561530 is about 730.9648404288.

The spelling of 390561530 in words is "three hundred ninety million, five hundred sixty-one thousand, five hundred thirty".