20299854 has 16 divisors (see below), whose sum is σ = 41909760. Its totient is φ = 6548280.

The previous prime is 20299841. The next prime is 20299859. The reversal of 20299854 is 45899202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20299859) 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, 54384 + ... + 54755.

It is an arithmetic number, because the mean of its divisors is an integer number (2619360).

Almost surely, 2^20299854 is an apocalyptic number.

20299854 is an abundant number, since it is smaller than the sum of its proper divisors (21609906).

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

20299854 is a wasteful number, since it uses less digits than its factorization.

20299854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109175.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 20299854 is about 4505.5359281666. The cubic root of 20299854 is about 272.7915864285.

The spelling of 20299854 in words is "twenty million, two hundred ninety-nine thousand, eight hundred fifty-four".