12901900 has 72 divisors (see below), whose sum is σ = 31466736. Its totient is φ = 4550400.

The previous prime is 12901879. The next prime is 12901913. The reversal of 12901900 is 910921.

It is a super-2 number, since 2×12901900² = 332918047220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40542 + ... + 40858.

It is an arithmetic number, because the mean of its divisors is an integer number (437038).

Almost surely, 2^12901900 is an apocalyptic number.

12901900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12901900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15733368).

12901900 is an abundant number, since it is smaller than the sum of its proper divisors (18564836).

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

12901900 is a wasteful number, since it uses less digits than its factorization.

12901900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 12901900 is about 3591.9214913469. The cubic root of 12901900 is about 234.5405236666.

The spelling of 12901900 in words is "twelve million, nine hundred one thousand, nine hundred".