20303454 has 16 divisors (see below), whose sum is σ = 41704848. Its totient is φ = 6584832.

The previous prime is 20303449. The next prime is 20303461. The reversal of 20303454 is 45430302.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20303454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45507 + ... + 45950.

It is an arithmetic number, because the mean of its divisors is an integer number (2606553).

Almost surely, 2^20303454 is an apocalyptic number.

20303454 is an abundant number, since it is smaller than the sum of its proper divisors (21401394).

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

20303454 is a wasteful number, since it uses less digits than its factorization.

20303454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91499.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 20303454 is about 4505.9354189780. The cubic root of 20303454 is about 272.8077112024.

Adding to 20303454 its reverse (45430302), we get a palindrome (65733756).

The spelling of 20303454 in words is "twenty million, three hundred three thousand, four hundred fifty-four".