78712452 has 96 divisors (see below), whose sum is σ = 251193600. Its totient is φ = 20756736.

The previous prime is 78712427. The next prime is 78712511. The reversal of 78712452 is 25421787.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5824 + ... + 13832.

It is an arithmetic number, because the mean of its divisors is an integer number (2616600).

Almost surely, 2^78712452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78712452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125596800).

78712452 is an abundant number, since it is smaller than the sum of its proper divisors (172481148).

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

78712452 is a wasteful number, since it uses less digits than its factorization.

78712452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8042 (or 8034 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 78712452 is about 8872.0038322805. The cubic root of 78712452 is about 428.5628095409.

The spelling of 78712452 in words is "seventy-eight million, seven hundred twelve thousand, four hundred fifty-two".