20100454 has 16 divisors (see below), whose sum is σ = 33094656. Its totient is φ = 9080200.

The previous prime is 20100439. The next prime is 20100463. The reversal of 20100454 is 45400102.

It is a super-2 number, since 2×20100454² = 808056502012232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 939 + ... + 6409.

It is an arithmetic number, because the mean of its divisors is an integer number (2068416).

Almost surely, 2^20100454 is an apocalyptic number.

20100454 is a deficient number, since it is larger than the sum of its proper divisors (12994202).

20100454 is a wasteful number, since it uses less digits than its factorization.

20100454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5651.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 20100454 is about 4483.3529863262. The cubic root of 20100454 is about 271.8954597542.

Adding to 20100454 its reverse (45400102), we get a palindrome (65500556).

The spelling of 20100454 in words is "twenty million, one hundred thousand, four hundred fifty-four".