78476844 has 48 divisors (see below), whose sum is σ = 187488000. Its totient is φ = 25540416.

The previous prime is 78476843. The next prime is 78476857. The reversal of 78476844 is 44867487.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 78476793 and 78476802.

It is not an unprimeable number, because it can be changed into a prime (78476843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140614 + ... + 141170.

It is an arithmetic number, because the mean of its divisors is an integer number (3906000).

Almost surely, 2^78476844 is an apocalyptic number.

It is an amenable number.

78476844 is an abundant number, since it is smaller than the sum of its proper divisors (109011156).

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

78476844 is a wasteful number, since it uses less digits than its factorization.

78476844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822 (or 820 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 48.

The square root of 78476844 is about 8858.7157082728. The cubic root of 78476844 is about 428.1347800987.

The spelling of 78476844 in words is "seventy-eight million, four hundred seventy-six thousand, eight hundred forty-four".