80078772 has 24 divisors (see below), whose sum is σ = 197842176. Its totient is φ = 25122688.

The previous prime is 80078743. The next prime is 80078777. The reversal of 80078772 is 27787008.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 80078772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80078777) 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, 196068 + ... + 196475.

It is an arithmetic number, because the mean of its divisors is an integer number (8243424).

Almost surely, 2^80078772 is an apocalyptic number.

It is an amenable number.

80078772 is an abundant number, since it is smaller than the sum of its proper divisors (117763404).

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

80078772 is a wasteful number, since it uses less digits than its factorization.

80078772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392567 (or 392565 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 39.

The square root of 80078772 is about 8948.6743152268. The cubic root of 80078772 is about 431.0283158885.

The spelling of 80078772 in words is "eighty million, seventy-eight thousand, seven hundred seventy-two".