78890676 has 24 divisors (see below), whose sum is σ = 194906880. Its totient is φ = 24749952.

The previous prime is 78890663. The next prime is 78890677. The reversal of 78890676 is 67609887.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78890677) 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, 193156 + ... + 193563.

It is an arithmetic number, because the mean of its divisors is an integer number (8121120).

Almost surely, 2^78890676 is an apocalyptic number.

It is an amenable number.

78890676 is an abundant number, since it is smaller than the sum of its proper divisors (116016204).

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

78890676 is a wasteful number, since it uses less digits than its factorization.

78890676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386743 (or 386741 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 51.

The square root of 78890676 is about 8882.0423327070. The cubic root of 78890676 is about 428.8860222852.

The spelling of 78890676 in words is "seventy-eight million, eight hundred ninety thousand, six hundred seventy-six".