396746720 has 24 divisors (see below), whose sum is σ = 937314504. Its totient is φ = 158698624.

The previous prime is 396746719. The next prime is 396746761. The reversal of 396746720 is 27647693.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1239674 + ... + 1239993.

It is an arithmetic number, because the mean of its divisors is an integer number (39054771).

Almost surely, 2^396746720 is an apocalyptic number.

It is an amenable number.

396746720 is an abundant number, since it is smaller than the sum of its proper divisors (540567784).

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

396746720 is a wasteful number, since it uses less digits than its factorization.

396746720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2479682 (or 2479674 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 44.

The square root of 396746720 is about 19918.5019517031. The cubic root of 396746720 is about 734.8033286866.

The spelling of 396746720 in words is "three hundred ninety-six million, seven hundred forty-six thousand, seven hundred twenty".