78702080 has 80 divisors (see below), whose sum is σ = 191800224. Its totient is φ = 30965760.

The previous prime is 78702073. The next prime is 78702101. The reversal of 78702080 is 8020787.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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, 181544 + ... + 181976.

Almost surely, 2^78702080 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 78702080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95900112).

78702080 is an abundant number, since it is smaller than the sum of its proper divisors (113098144).

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

78702080 is an equidigital number, since it uses as much as digits as its factorization.

78702080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527 (or 511 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 78702080 is about 8871.4192776579. The cubic root of 78702080 is about 428.5439846977.

The spelling of 78702080 in words is "seventy-eight million, seven hundred two thousand, eighty".