390860628 has 48 divisors (see below), whose sum is σ = 963251520. Its totient is φ = 123012864.

The previous prime is 390860581. The next prime is 390860629. The reversal of 390860628 is 826068093.

It is a self number, because there is not a number n which added to its sum of digits gives 390860628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390860629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68626 + ... + 74102.

It is an arithmetic number, because the mean of its divisors is an integer number (20067740).

Almost surely, 2^390860628 is an apocalyptic number.

390860628 is a gapful number since it is divisible by the number (38) 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 390860628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (481625760).

390860628 is an abundant number, since it is smaller than the sum of its proper divisors (572390892).

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

390860628 is a wasteful number, since it uses less digits than its factorization.

390860628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5816 (or 5814 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 390860628 is about 19770.1954466819. The cubic root of 390860628 is about 731.1513875058.

The spelling of 390860628 in words is "three hundred ninety million, eight hundred sixty thousand, six hundred twenty-eight".