78622880 has 48 divisors (see below), whose sum is σ = 212284800. Its totient is φ = 26956032.

The previous prime is 78622879. The next prime is 78622883. The reversal of 78622880 is 8822687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78622883) 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, 33980 + ... + 36219.

It is an arithmetic number, because the mean of its divisors is an integer number (4422600).

Almost surely, 2^78622880 is an apocalyptic number.

78622880 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78622880 is an abundant number, since it is smaller than the sum of its proper divisors (133661920).

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

78622880 is a wasteful number, since it uses less digits than its factorization.

78622880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70221 (or 70213 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 78622880 is about 8866.9543812969. The cubic root of 78622880 is about 428.4001847071.

The spelling of 78622880 in words is "seventy-eight million, six hundred twenty-two thousand, eight hundred eighty".