78372486 has 12 divisors (see below), whose sum is σ = 169807092. Its totient is φ = 26124156.

The previous prime is 78372479. The next prime is 78372493. The reversal of 78372486 is 68427387.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78372479) and next prime (78372493).

It is a super-2 number, since 2×78372486² = 12284493123640392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2176996 + ... + 2177031.

It is an arithmetic number, because the mean of its divisors is an integer number (14150591).

Almost surely, 2^78372486 is an apocalyptic number.

78372486 is an abundant number, since it is smaller than the sum of its proper divisors (91434606).

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

78372486 is a wasteful number, since it uses less digits than its factorization.

78372486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4354035 (or 4354032 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 78372486 is about 8852.8236173551. The cubic root of 78372486 is about 427.9449189606.

The spelling of 78372486 in words is "seventy-eight million, three hundred seventy-two thousand, four hundred eighty-six".