87241578 has 32 divisors (see below), whose sum is σ = 185509440. Its totient is φ = 27273600.

The previous prime is 87241573. The next prime is 87241579. The reversal of 87241578 is 87514278.

It is a super-2 number, since 2×87241578² = 15222185863860168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87241573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7726 + ... + 15302.

It is an arithmetic number, because the mean of its divisors is an integer number (5797170).

Almost surely, 2^87241578 is an apocalyptic number.

87241578 is an abundant number, since it is smaller than the sum of its proper divisors (98267862).

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

87241578 is a wasteful number, since it uses less digits than its factorization.

87241578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7702.

The product of its digits is 125440, while the sum is 42.

The square root of 87241578 is about 9340.3200159309. The cubic root of 87241578 is about 443.5145147978.

The spelling of 87241578 in words is "eighty-seven million, two hundred forty-one thousand, five hundred seventy-eight".