78910128 has 120 divisors (see below), whose sum is σ = 248841216. Its totient is φ = 23126400.

The previous prime is 78910103. The next prime is 78910147. The reversal of 78910128 is 82101987.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 78910092 and 78910101.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48301 + ... + 49907.

Almost surely, 2^78910128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78910128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124420608).

78910128 is an abundant number, since it is smaller than the sum of its proper divisors (169931088).

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

78910128 is a wasteful number, since it uses less digits than its factorization.

78910128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663 (or 1654 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 78910128 is about 8883.1372836403. The cubic root of 78910128 is about 428.9212693965.

The spelling of 78910128 in words is "seventy-eight million, nine hundred ten thousand, one hundred twenty-eight".