20912373 has 12 divisors (see below), whose sum is σ = 30719520. Its totient is φ = 13704936.

The previous prime is 20912351. The next prime is 20912377. The reversal of 20912373 is 37321902.

It is not a de Polignac number, because 20912373 - 2⁵ = 20912341 is a prime.

It is a super-2 number, since 2×20912373² = 874654688982258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20912377) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19161 + ... + 20222.

It is an arithmetic number, because the mean of its divisors is an integer number (2559960).

Almost surely, 2^20912373 is an apocalyptic number.

It is an amenable number.

20912373 is a deficient number, since it is larger than the sum of its proper divisors (9807147).

20912373 is a wasteful number, since it uses less digits than its factorization.

20912373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39448 (or 39445 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 20912373 is about 4573.0048108437. The cubic root of 20912373 is about 275.5081425740.

The spelling of 20912373 in words is "twenty million, nine hundred twelve thousand, three hundred seventy-three".