996381972 has 30 divisors (see below), whose sum is σ = 2604740138. Its totient is φ = 332127216.

The previous prime is 996381961. The next prime is 996381973. The reversal of 996381972 is 279183699.

996381972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 836713476 + 159668496 = 28926^2 + 12636^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996381973) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1537303 + ... + 1537950.

Almost surely, 2^996381972 is an apocalyptic number.

It is an amenable number.

996381972 is an abundant number, since it is smaller than the sum of its proper divisors (1608358166).

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

996381972 is a wasteful number, since it uses less digits than its factorization.

996381972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075269 (or 3075258 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 996381972 is about 31565.5187190073. The cubic root of 996381972 is about 998.7925332776.

The spelling of 996381972 in words is "nine hundred ninety-six million, three hundred eighty-one thousand, nine hundred seventy-two".