87245490 has 16 divisors (see below), whose sum is σ = 209389248. Its totient is φ = 23265456.

The previous prime is 87245461. The next prime is 87245491. The reversal of 87245490 is 9454278.

It is a super-2 number, since 2×87245490² = 15223551050680200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87245491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1454062 + ... + 1454121.

It is an arithmetic number, because the mean of its divisors is an integer number (13086828).

Almost surely, 2^87245490 is an apocalyptic number.

87245490 is an abundant number, since it is smaller than the sum of its proper divisors (122143758).

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

87245490 is a wasteful number, since it uses less digits than its factorization.

87245490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908193.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 87245490 is about 9340.5294282498. The cubic root of 87245490 is about 443.5211439108.

The spelling of 87245490 in words is "eighty-seven million, two hundred forty-five thousand, four hundred ninety".