99987328 has 32 divisors (see below), whose sum is σ = 227651760. Its totient is φ = 42851328.

The previous prime is 99987313. The next prime is 99987343. The reversal of 99987328 is 82378999.

It is an interprime number because it is at equal distance from previous prime (99987313) and next prime (99987343).

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54901 + ... + 56692.

Almost surely, 2^99987328 is an apocalyptic number.

It is an amenable number.

99987328 is an abundant number, since it is smaller than the sum of its proper divisors (127664432).

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

99987328 is a wasteful number, since it uses less digits than its factorization.

99987328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111614 (or 111602 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 55.

The square root of 99987328 is about 9999.3663799263. The cubic root of 99987328 is about 464.1392764618.

The spelling of 99987328 in words is "ninety-nine million, nine hundred eighty-seven thousand, three hundred twenty-eight".