20458454 has 16 divisors (see below), whose sum is σ = 32769792. Its totient is φ = 9556008.

The previous prime is 20458453. The next prime is 20458457. The reversal of 20458454 is 45485402.

It is a self number, because there is not a number n which added to its sum of digits gives 20458454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20458453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3194 + ... + 7149.

It is an arithmetic number, because the mean of its divisors is an integer number (2048112).

Almost surely, 2^20458454 is an apocalyptic number.

20458454 is a deficient number, since it is larger than the sum of its proper divisors (12311338).

20458454 is a wasteful number, since it uses less digits than its factorization.

20458454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10411.

The product of its (nonzero) digits is 25600, while the sum is 32.

The square root of 20458454 is about 4523.1022539845. The cubic root of 20458454 is about 273.5001721204.

The spelling of 20458454 in words is "twenty million, four hundred fifty-eight thousand, four hundred fifty-four".