12639948 has 24 divisors (see below), whose sum is σ = 29788080. Its totient is φ = 4171200.

The previous prime is 12639947. The next prime is 12639953. The reversal of 12639948 is 84993621.

12639948 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12639941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4003 + ... + 6426.

It is an arithmetic number, because the mean of its divisors is an integer number (1241170).

Almost surely, 2^12639948 is an apocalyptic number.

It is an amenable number.

12639948 is an abundant number, since it is smaller than the sum of its proper divisors (17148132).

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

12639948 is a wasteful number, since it uses less digits than its factorization.

12639948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10537 (or 10535 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 12639948 is about 3555.2704538474. The cubic root of 12639948 is about 232.9423374658.

It can be divided in two parts, 1263 and 9948, that added together give a palindrome (11211).

The spelling of 12639948 in words is "twelve million, six hundred thirty-nine thousand, nine hundred forty-eight".