78070752 has 36 divisors (see below), whose sum is σ = 222014520. Its totient is φ = 26023488.

The previous prime is 78070693. The next prime is 78070771. The reversal of 78070752 is 25707087.

It is a tau number, because it is divible by the number of its divisors (36).

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

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, 135252 + ... + 135827.

It is an arithmetic number, because the mean of its divisors is an integer number (6167070).

Almost surely, 2^78070752 is an apocalyptic number.

78070752 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

78070752 is an abundant number, since it is smaller than the sum of its proper divisors (143943768).

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

78070752 is a wasteful number, since it uses less digits than its factorization.

78070752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271095 (or 271084 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 36.

The square root of 78070752 is about 8835.7655016416. The cubic root of 78070752 is about 427.3950167981.

The spelling of 78070752 in words is "seventy-eight million, seventy thousand, seven hundred fifty-two".