78371132 has 12 divisors (see below), whose sum is σ = 156742320. Its totient is φ = 33587616.

The previous prime is 78371123. The next prime is 78371141. The reversal of 78371132 is 23117387.

It is an interprime number because it is at equal distance from previous prime (78371123) and next prime (78371141).

78371132 is an admirable number.

It is a super-2 number, since 2×78371132² = 12284068661922848, 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 3 ways as a sum of consecutive naturals, for example, 1399457 + ... + 1399512.

It is an arithmetic number, because the mean of its divisors is an integer number (13061860).

Almost surely, 2^78371132 is an apocalyptic number.

It is an amenable number.

78371132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78371132 is a wasteful number, since it uses less digits than its factorization.

78371132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798980 (or 2798978 counting only the distinct ones).

The product of its digits is 7056, while the sum is 32.

The square root of 78371132 is about 8852.7471442485. The cubic root of 78371132 is about 427.9424544870.

The spelling of 78371132 in words is "seventy-eight million, three hundred seventy-one thousand, one hundred thirty-two".