987215292 has 72 divisors (see below), whose sum is σ = 2975970816. Its totient is φ = 269796384.

The previous prime is 987215263. The next prime is 987215297. The reversal of 987215292 is 292512789.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987215297) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79368 + ... + 90959.

It is an arithmetic number, because the mean of its divisors is an integer number (41332928).

Almost surely, 2^987215292 is an apocalyptic number.

987215292 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

987215292 is an abundant number, since it is smaller than the sum of its proper divisors (1988755524).

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

987215292 is a wasteful number, since it uses less digits than its factorization.

987215292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170367 (or 170362 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 987215292 is about 31419.9823679136. The cubic root of 987215292 is about 995.7201395933.

The spelling of 987215292 in words is "nine hundred eighty-seven million, two hundred fifteen thousand, two hundred ninety-two".