78379712 has 56 divisors (see below), whose sum is σ = 167640000. Its totient is φ = 36239616.

The previous prime is 78379703. The next prime is 78379723. The reversal of 78379712 is 21797387.

It is a super-2 number, since 2×78379712² = 12286758506405888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51539 + ... + 53037.

Almost surely, 2^78379712 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 78379712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83820000).

78379712 is an abundant number, since it is smaller than the sum of its proper divisors (89260288).

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

78379712 is a wasteful number, since it uses less digits than its factorization.

78379712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573 (or 1563 counting only the distinct ones).

The product of its digits is 148176, while the sum is 44.

The square root of 78379712 is about 8853.2317263246. The cubic root of 78379712 is about 427.9580708336.

The spelling of 78379712 in words is "seventy-eight million, three hundred seventy-nine thousand, seven hundred twelve".