20293839 has 6 divisors (see below), whose sum is σ = 29313336. Its totient is φ = 13529220.

The previous prime is 20293837. The next prime is 20293841. The reversal of 20293839 is 93839202.

It is an interprime number because it is at equal distance from previous prime (20293837) and next prime (20293841).

It is not a de Polignac number, because 20293839 - 2¹ = 20293837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20293837) 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, 1127427 + ... + 1127444.

It is an arithmetic number, because the mean of its divisors is an integer number (4885556).

Almost surely, 2^20293839 is an apocalyptic number.

20293839 is a deficient number, since it is larger than the sum of its proper divisors (9019497).

20293839 is a wasteful number, since it uses less digits than its factorization.

20293839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2254877 (or 2254874 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 20293839 is about 4504.8683665563. The cubic root of 20293839 is about 272.7646403647.

The spelling of 20293839 in words is "twenty million, two hundred ninety-three thousand, eight hundred thirty-nine".