20481954 has 16 divisors (see below), whose sum is σ = 41052000. Its totient is φ = 6812640.

The previous prime is 20481953. The next prime is 20481959. The reversal of 20481954 is 45918402.

It is not an unprimeable number, because it can be changed into a prime (20481953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427 + ... + 6414.

It is an arithmetic number, because the mean of its divisors is an integer number (2565750).

Almost surely, 2^20481954 is an apocalyptic number.

20481954 is an abundant number, since it is smaller than the sum of its proper divisors (20570046).

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

20481954 is a wasteful number, since it uses less digits than its factorization.

20481954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7345.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 20481954 is about 4525.6992829838. The cubic root of 20481954 is about 273.6048524754.

The spelling of 20481954 in words is "twenty million, four hundred eighty-one thousand, nine hundred fifty-four".