20992353 has 16 divisors (see below), whose sum is σ = 29331456. Its totient is φ = 13329360.

The previous prime is 20992343. The next prime is 20992379. The reversal of 20992353 is 35329902.

It is not a de Polignac number, because 20992353 - 2⁴ = 20992337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20992303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20688 + ... + 21678.

It is an arithmetic number, because the mean of its divisors is an integer number (1833216).

Almost surely, 2^20992353 is an apocalyptic number.

20992353 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20992353 is a deficient number, since it is larger than the sum of its proper divisors (8339103).

20992353 is a wasteful number, since it uses less digits than its factorization.

20992353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324.

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 20992353 is about 4581.7412628825. The cubic root of 20992353 is about 275.8589254881.

The spelling of 20992353 in words is "twenty million, nine hundred ninety-two thousand, three hundred fifty-three".