393260728 has 32 divisors (see below), whose sum is σ = 892274400. Its totient is φ = 158625792.

The previous prime is 393260719. The next prime is 393260737. The reversal of 393260728 is 827062393.

It is an interprime number because it is at equal distance from previous prime (393260719) and next prime (393260737).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205593 + ... + 207496.

It is an arithmetic number, because the mean of its divisors is an integer number (27883575).

Almost surely, 2^393260728 is an apocalyptic number.

It is an amenable number.

393260728 is an abundant number, since it is smaller than the sum of its proper divisors (499013672).

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

393260728 is a wasteful number, since it uses less digits than its factorization.

393260728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413119 (or 413115 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 393260728 is about 19830.8025051938. The cubic root of 393260728 is about 732.6448923812.

It can be divided in two parts, 393 and 260728, that added together give a square (261121 = 511²).

The spelling of 393260728 in words is "three hundred ninety-three million, two hundred sixty thousand, seven hundred twenty-eight".