396731552 has 144 divisors (see below), whose sum is σ = 980925120. Its totient is φ = 154275840.

The previous prime is 396731527. The next prime is 396731557. The reversal of 396731552 is 255137693.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (396731557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4089968 + ... + 4090064.

It is an arithmetic number, because the mean of its divisors is an integer number (6811980).

Almost surely, 2^396731552 is an apocalyptic number.

396731552 is a gapful number since it is divisible by the number (32) 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 396731552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (490462560).

396731552 is an abundant number, since it is smaller than the sum of its proper divisors (584193568).

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

396731552 is a wasteful number, since it uses less digits than its factorization.

396731552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 156 counting only the distinct ones).

The product of its digits is 170100, while the sum is 41.

The square root of 396731552 is about 19918.1211965386. The cubic root of 396731552 is about 734.7939644933.

The spelling of 396731552 in words is "three hundred ninety-six million, seven hundred thirty-one thousand, five hundred fifty-two".