86678240 has 96 divisors (see below), whose sum is σ = 236615904. Its totient is φ = 29655040.

The previous prime is 86678233. The next prime is 86678281. The reversal of 86678240 is 4287668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28472 + ... + 31368.

It is an arithmetic number, because the mean of its divisors is an integer number (2464749).

Almost surely, 2^86678240 is an apocalyptic number.

86678240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86678240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118307952).

86678240 is an abundant number, since it is smaller than the sum of its proper divisors (149937664).

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

86678240 is a wasteful number, since it uses less digits than its factorization.

86678240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940 (or 2932 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 86678240 is about 9310.1149294732. The cubic root of 86678240 is about 442.5578291642.

The spelling of 86678240 in words is "eighty-six million, six hundred seventy-eight thousand, two hundred forty".