26979972 has 12 divisors (see below), whose sum is σ = 62953296. Its totient is φ = 8993320.

The previous prime is 26979971. The next prime is 26979973. The reversal of 26979972 is 27997962.

It is an interprime number because it is at equal distance from previous prime (26979971) and next prime (26979973).

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

It is not an unprimeable number, because it can be changed into a prime (26979971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1124154 + ... + 1124177.

It is an arithmetic number, because the mean of its divisors is an integer number (5246108).

Almost surely, 2^26979972 is an apocalyptic number.

It is an amenable number.

26979972 is an abundant number, since it is smaller than the sum of its proper divisors (35973324).

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

26979972 is a wasteful number, since it uses less digits than its factorization.

26979972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2248338 (or 2248336 counting only the distinct ones).

The product of its digits is 857304, while the sum is 51.

The square root of 26979972 is about 5194.2248699878. The cubic root of 26979972 is about 299.9258038735.

The spelling of 26979972 in words is "twenty-six million, nine hundred seventy-nine thousand, nine hundred seventy-two".