20999202 has 32 divisors (see below), whose sum is σ = 49299072. Its totient is φ = 5837184.

The previous prime is 20999197. The next prime is 20999203. The reversal of 20999202 is 20299902.

20999202 is nontrivially palindromic in base 5.

It is not an unprimeable number, because it can be changed into a prime (20999203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5203 + ... + 8310.

It is an arithmetic number, because the mean of its divisors is an integer number (1540596).

Almost surely, 2^20999202 is an apocalyptic number.

20999202 is an abundant number, since it is smaller than the sum of its proper divisors (28299870).

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

20999202 is a wasteful number, since it uses less digits than its factorization.

20999202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13562.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 20999202 is about 4582.4886251905. The cubic root of 20999202 is about 275.8889229566. Note that the first 3 decimals are identical.

The spelling of 20999202 in words is "twenty million, nine hundred ninety-nine thousand, two hundred two".