20535339 has 16 divisors (see below), whose sum is σ = 30251520. Its totient is φ = 12286560.

The previous prime is 20535323. The next prime is 20535349. The reversal of 20535339 is 93353502.

It is not a de Polignac number, because 20535339 - 2⁴ = 20535323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20535349) 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, 1332 + ... + 6545.

It is an arithmetic number, because the mean of its divisors is an integer number (1890720).

Almost surely, 2^20535339 is an apocalyptic number.

20535339 is a deficient number, since it is larger than the sum of its proper divisors (9716181).

20535339 is a wasteful number, since it uses less digits than its factorization.

20535339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7970.

The product of its (nonzero) digits is 12150, while the sum is 30.

The square root of 20535339 is about 4531.5934283649. The cubic root of 20535339 is about 273.8423578612.

The spelling of 20535339 in words is "twenty million, five hundred thirty-five thousand, three hundred thirty-nine".