78260920 has 32 divisors (see below), whose sum is σ = 180849600. Its totient is φ = 30457728.

The previous prime is 78260893. The next prime is 78260947. The reversal of 78260920 is 2906287.

It is an interprime number because it is at equal distance from previous prime (78260893) and next prime (78260947).

It is a super-2 number, since 2×78260920² = 12249543198492800, which contains 22 as substring.

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, 24960 + ... + 27919.

It is an arithmetic number, because the mean of its divisors is an integer number (5651550).

Almost surely, 2^78260920 is an apocalyptic number.

It is an amenable number.

78260920 is an abundant number, since it is smaller than the sum of its proper divisors (102588680).

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

78260920 is a wasteful number, since it uses less digits than its factorization.

78260920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52927 (or 52923 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 78260920 is about 8846.5202198379. The cubic root of 78260920 is about 427.7417576287.

The spelling of 78260920 in words is "seventy-eight million, two hundred sixty thousand, nine hundred twenty".