78027880 has 32 divisors (see below), whose sum is σ = 200643840. Its totient is φ = 26752320.

The previous prime is 78027877. The next prime is 78027907. The reversal of 78027880 is 8872087.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 139056 + ... + 139615.

It is an arithmetic number, because the mean of its divisors is an integer number (6270120).

Almost surely, 2^78027880 is an apocalyptic number.

78027880 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78027880 is an abundant number, since it is smaller than the sum of its proper divisors (122615960).

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

78027880 is a wasteful number, since it uses less digits than its factorization.

78027880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278689 (or 278685 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 40.

The square root of 78027880 is about 8833.3391194950. The cubic root of 78027880 is about 427.3167688254.

The spelling of 78027880 in words is "seventy-eight million, twenty-seven thousand, eight hundred eighty".