390628896 has 48 divisors (see below), whose sum is σ = 1171888704. Its totient is φ = 111608064.

The previous prime is 390628871. The next prime is 390628897. The reversal of 390628896 is 698826093.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (390628897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289975 + ... + 291318.

It is an arithmetic number, because the mean of its divisors is an integer number (24414348).

Almost surely, 2^390628896 is an apocalyptic number.

It is an amenable number.

390628896 is an abundant number, since it is smaller than the sum of its proper divisors (781259808).

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

390628896 is a wasteful number, since it uses less digits than its factorization.

390628896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581313 (or 581305 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 51.

The square root of 390628896 is about 19764.3339376767. Note that the first 3 decimals coincide. The cubic root of 390628896 is about 731.0068648327.

The spelling of 390628896 in words is "three hundred ninety million, six hundred twenty-eight thousand, eight hundred ninety-six".