20979352 has 8 divisors (see below), whose sum is σ = 39336300. Its totient is φ = 10489672.

The previous prime is 20979341. The next prime is 20979353. The reversal of 20979352 is 25397902.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20979353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1311202 + ... + 1311217.

Almost surely, 2^20979352 is an apocalyptic number.

It is an amenable number.

20979352 is a deficient number, since it is larger than the sum of its proper divisors (18356948).

20979352 is a wasteful number, since it uses less digits than its factorization.

20979352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2622425 (or 2622421 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 20979352 is about 4580.3222594049. The cubic root of 20979352 is about 275.8019653412.

It can be divided in two parts, 2097 and 9352, that added together give a square (11449 = 107²).

The spelling of 20979352 in words is "twenty million, nine hundred seventy-nine thousand, three hundred fifty-two".