86438718 has 32 divisors (see below), whose sum is σ = 192741120. Its totient is φ = 28714680.

The previous prime is 86438711. The next prime is 86438749. The reversal of 86438718 is 81783468.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86438711) 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, 14221 + ... + 19367.

It is an arithmetic number, because the mean of its divisors is an integer number (6023160).

Almost surely, 2^86438718 is an apocalyptic number.

86438718 is an abundant number, since it is smaller than the sum of its proper divisors (106302402).

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

86438718 is a wasteful number, since it uses less digits than its factorization.

86438718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5469 (or 5463 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 86438718 is about 9297.2424944174. The cubic root of 86438718 is about 442.1498062397.

The spelling of 86438718 in words is "eighty-six million, four hundred thirty-eight thousand, seven hundred eighteen".