78812352 has 140 divisors (see below), whose sum is σ = 244150896. Its totient is φ = 25090560.

The previous prime is 78812311. The next prime is 78812359. The reversal of 78812352 is 25321887.

It is a super-2 number, since 2×78812352² = 12422773655543808, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (78812359) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 118902 + ... + 119562.

Almost surely, 2^78812352 is an apocalyptic number.

78812352 is a gapful number since it is divisible by the number (72) 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 78812352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122075448).

78812352 is an abundant number, since it is smaller than the sum of its proper divisors (165338544).

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

78812352 is a wasteful number, since it uses less digits than its factorization.

78812352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708 (or 689 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 78812352 is about 8877.6321167302. The cubic root of 78812352 is about 428.7440401838.

The spelling of 78812352 in words is "seventy-eight million, eight hundred twelve thousand, three hundred fifty-two".