78880970 has 64 divisors (see below), whose sum is σ = 172523520. Its totient is φ = 25365312.

The previous prime is 78880943. The next prime is 78880979. The reversal of 78880970 is 7908887.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78880979) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168677 + ... + 169143.

It is an arithmetic number, because the mean of its divisors is an integer number (2695680).

Almost surely, 2^78880970 is an apocalyptic number.

78880970 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78880970 is an abundant number, since it is smaller than the sum of its proper divisors (93642550).

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

78880970 is a wasteful number, since it uses less digits than its factorization.

78880970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627.

The product of its (nonzero) digits is 225792, while the sum is 47.

The square root of 78880970 is about 8881.4959325555. The cubic root of 78880970 is about 428.8684328028.

The spelling of 78880970 in words is "seventy-eight million, eight hundred eighty thousand, nine hundred seventy".