87491208 has 64 divisors (see below), whose sum is σ = 251136000. Its totient is φ = 24881472.

The previous prime is 87491177. The next prime is 87491249. The reversal of 87491208 is 80219478.

It is a super-2 number, since 2×87491208² = 15309422954598528, which contains 22 as substring.

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, 39063 + ... + 41241.

It is an arithmetic number, because the mean of its divisors is an integer number (3924000).

Almost surely, 2^87491208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87491208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125568000).

87491208 is an abundant number, since it is smaller than the sum of its proper divisors (163644792).

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

87491208 is a wasteful number, since it uses less digits than its factorization.

87491208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434 (or 2430 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 87491208 is about 9353.6735029613. The cubic root of 87491208 is about 443.9371309409.

The spelling of 87491208 in words is "eighty-seven million, four hundred ninety-one thousand, two hundred eight".