20254939 has 8 divisors (see below), whose sum is σ = 21521808. Its totient is φ = 18996480.

The previous prime is 20254937. The next prime is 20254967. The reversal of 20254939 is 93945202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20254939 - 2¹ = 20254937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20254937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3279 + ... + 7159.

It is an arithmetic number, because the mean of its divisors is an integer number (2690226).

Almost surely, 2^20254939 is an apocalyptic number.

20254939 is a deficient number, since it is larger than the sum of its proper divisors (1266869).

20254939 is a wasteful number, since it uses less digits than its factorization.

20254939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 20254939 is about 4500.5487443200. The cubic root of 20254939 is about 272.5902470213.

The spelling of 20254939 in words is "twenty million, two hundred fifty-four thousand, nine hundred thirty-nine".