12261972 has 12 divisors (see below), whose sum is σ = 28611296. Its totient is φ = 4087320.

The previous prime is 12261961. The next prime is 12262021. The reversal of 12261972 is 27916221.

12261972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 510904 + ... + 510927.

Almost surely, 2^12261972 is an apocalyptic number.

12261972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12261972 is an abundant number, since it is smaller than the sum of its proper divisors (16349324).

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

12261972 is a wasteful number, since it uses less digits than its factorization.

12261972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021838 (or 1021836 counting only the distinct ones).

The product of its digits is 3024, while the sum is 30.

The square root of 12261972 is about 3501.7098680502. The cubic root of 12261972 is about 230.5968869456.

The spelling of 12261972 in words is "twelve million, two hundred sixty-one thousand, nine hundred seventy-two".