390530 has 24 divisors (see below), whose sum is σ = 818748. Its totient is φ = 133728.

The previous prime is 390527. The next prime is 390539. The reversal of 390530 is 35093.

390530 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 388129 + 2401 = 623^2 + 49^2 .

It is a nialpdrome in base 5.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 390530.

It is not an unprimeable number, because it can be changed into a prime (390539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92 + ... + 888.

2³⁹⁰⁵³⁰ is an apocalyptic number.

390530 is an abundant number, since it is smaller than the sum of its proper divisors (428218).

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

390530 is a wasteful number, since it uses less digits than its factorization.

390530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818 (or 811 counting only the distinct ones).

The product of its (nonzero) digits is 405, while the sum is 20.

The square root of 390530 is about 624.9239953786. The cubic root of 390530 is about 73.0945169656.

The spelling of 390530 in words is "three hundred ninety thousand, five hundred thirty".