78629946 has 32 divisors (see below), whose sum is σ = 160030080. Its totient is φ = 25752576.

The previous prime is 78629911. The next prime is 78629951. The reversal of 78629946 is 64992687.

It is a happy number.

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, 96790 + ... + 97598.

It is an arithmetic number, because the mean of its divisors is an integer number (5000940).

Almost surely, 2^78629946 is an apocalyptic number.

78629946 is an abundant number, since it is smaller than the sum of its proper divisors (81400134).

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

78629946 is a wasteful number, since it uses less digits than its factorization.

78629946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078.

The product of its digits is 1306368, while the sum is 51.

The square root of 78629946 is about 8867.3528180624. The cubic root of 78629946 is about 428.4130180580.

The spelling of 78629946 in words is "seventy-eight million, six hundred twenty-nine thousand, nine hundred forty-six".