12621948 has 12 divisors (see below), whose sum is σ = 29451240. Its totient is φ = 4207312.

The previous prime is 12621941. The next prime is 12621949. The reversal of 12621948 is 84912621.

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

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12621941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525903 + ... + 525926.

It is an arithmetic number, because the mean of its divisors is an integer number (2454270).

Almost surely, 2^12621948 is an apocalyptic number.

It is an amenable number.

12621948 is an abundant number, since it is smaller than the sum of its proper divisors (16829292).

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

12621948 is a wasteful number, since it uses less digits than its factorization.

12621948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051836 (or 1051834 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 12621948 is about 3552.7380989879. The cubic root of 12621948 is about 232.8317105869.

The spelling of 12621948 in words is "twelve million, six hundred twenty-one thousand, nine hundred forty-eight".