12912380 has 24 divisors (see below), whose sum is σ = 29202432. Its totient is φ = 4767552.

The previous prime is 12912379. The next prime is 12912391. The reversal of 12912380 is 8321921.

12912380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a zygodrome in base 3.

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, 24572 + ... + 25091.

It is an arithmetic number, because the mean of its divisors is an integer number (1216768).

Almost surely, 2^12912380 is an apocalyptic number.

12912380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12912380 is an abundant number, since it is smaller than the sum of its proper divisors (16290052).

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

12912380 is a wasteful number, since it uses less digits than its factorization.

12912380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49685 (or 49683 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 12912380 is about 3593.3800244338. The cubic root of 12912380 is about 234.6040109427.

The spelling of 12912380 in words is "twelve million, nine hundred twelve thousand, three hundred eighty".