987291800 has 48 divisors (see below), whose sum is σ = 2504136600. Its totient is φ = 359014400.

The previous prime is 987291763. The next prime is 987291803. The reversal of 987291800 is 8192789.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987291803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222185 + ... + 226584.

Almost surely, 2^987291800 is an apocalyptic number.

It is an amenable number.

987291800 is an abundant number, since it is smaller than the sum of its proper divisors (1516844800).

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

987291800 is a wasteful number, since it uses less digits than its factorization.

987291800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448796 (or 448787 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 987291800 is about 31421.1998497829. The cubic root of 987291800 is about 995.7458613006.

The spelling of 987291800 in words is "nine hundred eighty-seven million, two hundred ninety-one thousand, eight hundred".