390265530 has 64 divisors (see below), whose sum is σ = 964915200. Its totient is φ = 100975680.

The previous prime is 390265523. The next prime is 390265573. The reversal of 390265530 is 35562093.

It is a junction number, because it is equal to n+sod(n) for n = 390265491 and 390265500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138435 + ... + 141225.

It is an arithmetic number, because the mean of its divisors is an integer number (15076800).

Almost surely, 2^390265530 is an apocalyptic number.

390265530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 390265530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (482457600).

390265530 is an abundant number, since it is smaller than the sum of its proper divisors (574649670).

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

390265530 is a wasteful number, since it uses less digits than its factorization.

390265530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939.

The product of its (nonzero) digits is 24300, while the sum is 33.

The square root of 390265530 is about 19755.1393313234. The cubic root of 390265530 is about 730.7801317814.

The spelling of 390265530 in words is "three hundred ninety million, two hundred sixty-five thousand, five hundred thirty".