396287772 has 12 divisors (see below), whose sum is σ = 924671496. Its totient is φ = 132095920.

The previous prime is 396287767. The next prime is 396287783. The reversal of 396287772 is 277782693.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16511979 + ... + 16512002.

It is an arithmetic number, because the mean of its divisors is an integer number (77055958).

Almost surely, 2^396287772 is an apocalyptic number.

It is an amenable number.

396287772 is an abundant number, since it is smaller than the sum of its proper divisors (528383724).

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

396287772 is a wasteful number, since it uses less digits than its factorization.

396287772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33023988 (or 33023986 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 51.

The square root of 396287772 is about 19906.9779725603. The cubic root of 396287772 is about 734.5198845137.

The spelling of 396287772 in words is "three hundred ninety-six million, two hundred eighty-seven thousand, seven hundred seventy-two".