20299573 has 6 divisors (see below), whose sum is σ = 23613846. Its totient is φ = 17399592.

The previous prime is 20299493. The next prime is 20299577. The reversal of 20299573 is 37599202.

It can be written as a sum of positive squares in only one way, i.e., 19695844 + 603729 = 4438^2 + 777^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20299573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20299577) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 207090 + ... + 207187.

It is an arithmetic number, because the mean of its divisors is an integer number (3935641).

Almost surely, 2^20299573 is an apocalyptic number.

It is an amenable number.

20299573 is a deficient number, since it is larger than the sum of its proper divisors (3314273).

20299573 is an equidigital number, since it uses as much as digits as its factorization.

20299573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414291 (or 414284 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 20299573 is about 4505.5047441990. The cubic root of 20299573 is about 272.7903277201.

The spelling of 20299573 in words is "twenty million, two hundred ninety-nine thousand, five hundred seventy-three".