20568454 has 4 divisors (see below), whose sum is σ = 30852684. Its totient is φ = 10284226.

The previous prime is 20568451. The next prime is 20568461. The reversal of 20568454 is 45486502.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×20568454² = 846122599900232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20568451) 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 as a sum of consecutive naturals, namely, 5142112 + ... + 5142115.

It is an arithmetic number, because the mean of its divisors is an integer number (7713171).

Almost surely, 2^20568454 is an apocalyptic number.

20568454 is a deficient number, since it is larger than the sum of its proper divisors (10284230).

20568454 is a wasteful number, since it uses less digits than its factorization.

20568454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10284229.

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 20568454 is about 4535.2457485786. The cubic root of 20568454 is about 273.9894769255.

The spelling of 20568454 in words is "twenty million, five hundred sixty-eight thousand, four hundred fifty-four".