78809376 has 48 divisors (see below), whose sum is σ = 207361728. Its totient is φ = 26208000.

The previous prime is 78809369. The next prime is 78809417. The reversal of 78809376 is 67390887.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59926 + ... + 61226.

It is an arithmetic number, because the mean of its divisors is an integer number (4320036).

Almost surely, 2^78809376 is an apocalyptic number.

It is an amenable number.

78809376 is an abundant number, since it is smaller than the sum of its proper divisors (128552352).

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

78809376 is a wasteful number, since it uses less digits than its factorization.

78809376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945 (or 1937 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 78809376 is about 8877.4645028859. The cubic root of 78809376 is about 428.7386435749.

The spelling of 78809376 in words is "seventy-eight million, eight hundred nine thousand, three hundred seventy-six".