87245470 has 32 divisors (see below), whose sum is σ = 174585600. Its totient is φ = 31173120.

The previous prime is 87245461. The next prime is 87245491. The reversal of 87245470 is 7454278.

It is a super-2 number, since 2×87245470² = 15223544071041800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6795 + ... + 14854.

It is an arithmetic number, because the mean of its divisors is an integer number (5455800).

Almost surely, 2^87245470 is an apocalyptic number.

87245470 is an abundant number, since it is smaller than the sum of its proper divisors (87340130).

87245470 is a wasteful number, since it uses less digits than its factorization.

87245470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21700.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 87245470 is about 9340.5283576466. The cubic root of 87245470 is about 443.5211100201.

The spelling of 87245470 in words is "eighty-seven million, two hundred forty-five thousand, four hundred seventy".