20900335 has 4 divisors (see below), whose sum is σ = 25080408. Its totient is φ = 16720264.

The previous prime is 20900317. The next prime is 20900339. The reversal of 20900335 is 53300902.

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

It is a cyclic number.

It is not a de Polignac number, because 20900335 - 2¹³ = 20892143 is a prime.

It is a super-2 number, since 2×20900335² = 873648006224450, 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 (20900339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2090029 + ... + 2090038.

It is an arithmetic number, because the mean of its divisors is an integer number (6270102).

Almost surely, 2^20900335 is an apocalyptic number.

20900335 is a deficient number, since it is larger than the sum of its proper divisors (4180073).

20900335 is an equidigital number, since it uses as much as digits as its factorization.

20900335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4180072.

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 20900335 is about 4571.6884189542. The cubic root of 20900335 is about 275.4552679176.

The spelling of 20900335 in words is "twenty million, nine hundred thousand, three hundred thirty-five".