390070912 has 128 divisors (see below), whose sum is σ = 1020326400. Its totient is φ = 143907840.

The previous prime is 390070873. The next prime is 390070913. The reversal of 390070912 is 219070093.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (390070913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186223 + ... + 188305.

It is an arithmetic number, because the mean of its divisors is an integer number (7971300).

Almost surely, 2^390070912 is an apocalyptic number.

390070912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 390070912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (510163200).

390070912 is an abundant number, since it is smaller than the sum of its proper divisors (630255488).

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

390070912 is a wasteful number, since it uses less digits than its factorization.

390070912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134 (or 2122 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 390070912 is about 19750.2129608772. The cubic root of 390070912 is about 730.6586361973.

The spelling of 390070912 in words is "three hundred ninety million, seventy thousand, nine hundred twelve".