987731238 has 32 divisors (see below), whose sum is σ = 2196052992. Its totient is φ = 294112800.

The previous prime is 987731209. The next prime is 987731341. The reversal of 987731238 is 832137789.

It is a super-2 number, since 2×987731238² = 1951225997042025288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201828 + ... + 206663.

It is an arithmetic number, because the mean of its divisors is an integer number (68626656).

Almost surely, 2^987731238 is an apocalyptic number.

987731238 is an abundant number, since it is smaller than the sum of its proper divisors (1208321754).

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

987731238 is a wasteful number, since it uses less digits than its factorization.

987731238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408540.

The product of its digits is 508032, while the sum is 48.

The square root of 987731238 is about 31428.1917710835. The cubic root of 987731238 is about 995.8935730059.

The spelling of 987731238 in words is "nine hundred eighty-seven million, seven hundred thirty-one thousand, two hundred thirty-eight".