78252706 has 32 divisors (see below), whose sum is σ = 140630400. Its totient is φ = 32619888.

The previous prime is 78252677. The next prime is 78252731. The reversal of 78252706 is 60725287.

It is a super-2 number, since 2×78252706² = 12246971992644872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23841 + ... + 26923.

It is an arithmetic number, because the mean of its divisors is an integer number (4394700).

Almost surely, 2^78252706 is an apocalyptic number.

78252706 is a deficient number, since it is larger than the sum of its proper divisors (62377694).

78252706 is a wasteful number, since it uses less digits than its factorization.

78252706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143 (or 3129 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 78252706 is about 8846.0559573179. The cubic root of 78252706 is about 427.7267923318.

The spelling of 78252706 in words is "seventy-eight million, two hundred fifty-two thousand, seven hundred six".