20257941 has 12 divisors (see below), whose sum is σ = 29689856. Its totient is φ = 12277320.

The previous prime is 20257927. The next prime is 20257943. The reversal of 20257941 is 14975202.

It is not a de Polignac number, because 20257941 - 2⁶ = 20257877 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20257899 and 20257908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20257943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27541 + ... + 28266.

Almost surely, 2^20257941 is an apocalyptic number.

It is an amenable number.

20257941 is a deficient number, since it is larger than the sum of its proper divisors (9431915).

20257941 is a wasteful number, since it uses less digits than its factorization.

20257941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55832 (or 55821 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 20257941 is about 4500.8822468489. The cubic root of 20257941 is about 272.6037132923.

The spelling of 20257941 in words is "twenty million, two hundred fifty-seven thousand, nine hundred forty-one".