78705152 has 40 divisors (see below), whose sum is σ = 158065776. Its totient is φ = 39150592.

The previous prime is 78705127. The next prime is 78705161. The reversal of 78705152 is 25150787.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177443 + ... + 177885.

Almost surely, 2^78705152 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 78705152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79032888).

78705152 is an abundant number, since it is smaller than the sum of its proper divisors (79360624).

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

78705152 is an equidigital number, since it uses as much as digits as its factorization.

78705152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 78705152 is about 8871.5924162464. The cubic root of 78705152 is about 428.5495604503.

The spelling of 78705152 in words is "seventy-eight million, seven hundred five thousand, one hundred fifty-two".