78336970 has 16 divisors (see below), whose sum is σ = 144286560. Its totient is φ = 30605904.

The previous prime is 78336967. The next prime is 78336971. The reversal of 78336970 is 7963387.

It is a super-2 number, since 2×78336970² = 12273361737561800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (78336971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90660 + ... + 91519.

It is an arithmetic number, because the mean of its divisors is an integer number (9017910).

Almost surely, 2^78336970 is an apocalyptic number.

78336970 is a deficient number, since it is larger than the sum of its proper divisors (65949590).

78336970 is a wasteful number, since it uses less digits than its factorization.

78336970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182229.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 78336970 is about 8850.8174763691. The cubic root of 78336970 is about 427.8802653685.

The spelling of 78336970 in words is "seventy-eight million, three hundred thirty-six thousand, nine hundred seventy".