20339235 has 32 divisors (see below), whose sum is σ = 41326080. Its totient is φ = 9297504.

The previous prime is 20339219. The next prime is 20339273. The reversal of 20339235 is 53293302.

It is not a de Polignac number, because 20339235 - 2⁴ = 20339219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20339199 and 20339208.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9817 + ... + 11706.

It is an arithmetic number, because the mean of its divisors is an integer number (1291440).

Almost surely, 2^20339235 is an apocalyptic number.

20339235 is an abundant number, since it is smaller than the sum of its proper divisors (20986845).

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

20339235 is a wasteful number, since it uses less digits than its factorization.

20339235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21544 (or 21538 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

The square root of 20339235 is about 4509.9041009760. The cubic root of 20339235 is about 272.9678744953.

The spelling of 20339235 in words is "twenty million, three hundred thirty-nine thousand, two hundred thirty-five".