87308418 has 16 divisors (see below), whose sum is σ = 174819456. Its totient is φ = 29069040.

The previous prime is 87308411. The next prime is 87308423. The reversal of 87308418 is 81480378.

It is not an unprimeable number, because it can be changed into a prime (87308411) 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, 2521 + ... + 13452.

It is an arithmetic number, because the mean of its divisors is an integer number (10926216).

Almost surely, 2^87308418 is an apocalyptic number.

87308418 is an abundant number, since it is smaller than the sum of its proper divisors (87511038).

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

87308418 is a wasteful number, since it uses less digits than its factorization.

87308418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16889.

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 87308418 is about 9343.8973667309. The cubic root of 87308418 is about 443.6277518703.

It can be divided in two parts, 87 and 308418, that added together give a triangular number (308505 = T₇₈₅).

The spelling of 87308418 in words is "eighty-seven million, three hundred eight thousand, four hundred eighteen".