20508954 has 8 divisors (see below), whose sum is σ = 41017920. Its totient is φ = 6836316.

The previous prime is 20508941. The next prime is 20508991. The reversal of 20508954 is 45980502.

It is a sphenic number, since it is the product of 3 distinct primes.

20508954 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1709074 + ... + 1709085.

It is an arithmetic number, because the mean of its divisors is an integer number (5127240).

Almost surely, 2^20508954 is an apocalyptic number.

20508954 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20508954 is a wasteful number, since it uses less digits than its factorization.

20508954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3418164.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 20508954 is about 4528.6812650042. The cubic root of 20508954 is about 273.7250247226.

The spelling of 20508954 in words is "twenty million, five hundred eight thousand, nine hundred fifty-four".