20153799 has 16 divisors (see below), whose sum is σ = 30553600. Its totient is φ = 13122648.

The previous prime is 20153761. The next prime is 20153803. The reversal of 20153799 is 99735102.

It is not a de Polignac number, because 20153799 - 2¹¹ = 20151751 is a prime.

It is a super-2 number, since 2×20153799² = 812351228264802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20153759) 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 15 ways as a sum of consecutive naturals, for example, 7519 + ... + 9840.

It is an arithmetic number, because the mean of its divisors is an integer number (1909600).

Almost surely, 2^20153799 is an apocalyptic number.

20153799 is a deficient number, since it is larger than the sum of its proper divisors (10399801).

20153799 is a wasteful number, since it uses less digits than its factorization.

20153799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17411 (or 17405 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 20153799 is about 4489.2982747864. The cubic root of 20153799 is about 272.1357768988.

The spelling of 20153799 in words is "twenty million, one hundred fifty-three thousand, seven hundred ninety-nine".