78561152 has 16 divisors (see below), whose sum is σ = 156508800. Its totient is φ = 39280512.

The previous prime is 78561151. The next prime is 78561179. The reversal of 78561152 is 25116587.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78561151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306752 + ... + 307007.

It is an arithmetic number, because the mean of its divisors is an integer number (9781800).

Almost surely, 2^78561152 is an apocalyptic number.

It is an amenable number.

78561152 is a deficient number, since it is larger than the sum of its proper divisors (77947648).

78561152 is an equidigital number, since it uses as much as digits as its factorization.

78561152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613773 (or 613761 counting only the distinct ones).

The product of its digits is 16800, while the sum is 35.

The square root of 78561152 is about 8863.4729085162. The cubic root of 78561152 is about 428.2880408874.

The spelling of 78561152 in words is "seventy-eight million, five hundred sixty-one thousand, one hundred fifty-two".