78978076 has 12 divisors (see below), whose sum is σ = 138317760. Its totient is φ = 39458720.

The previous prime is 78978071. The next prime is 78978101. The reversal of 78978076 is 67087987.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78978071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1105 + ... + 12616.

It is an arithmetic number, because the mean of its divisors is an integer number (11526480).

Almost surely, 2^78978076 is an apocalyptic number.

It is an amenable number.

78978076 is a deficient number, since it is larger than the sum of its proper divisors (59339684).

78978076 is a wasteful number, since it uses less digits than its factorization.

78978076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15164 (or 15162 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 52.

The square root of 78978076 is about 8886.9610103792. The cubic root of 78978076 is about 429.0443460405.

The spelling of 78978076 in words is "seventy-eight million, nine hundred seventy-eight thousand, seventy-six".