20274939 has 12 divisors (see below), whose sum is σ = 29361072. Its totient is φ = 13482000.

The previous prime is 20274913. The next prime is 20274941. The reversal of 20274939 is 93947202.

It is not a de Polignac number, because 20274939 - 2⁷ = 20274811 is a prime.

It is a super-2 number, since 2×20274939² = 822146302907442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20274949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1114 + ... + 6464.

It is an arithmetic number, because the mean of its divisors is an integer number (2446756).

Almost surely, 2^20274939 is an apocalyptic number.

20274939 is a deficient number, since it is larger than the sum of its proper divisors (9086133).

20274939 is a wasteful number, since it uses less digits than its factorization.

20274939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5778 (or 5775 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 20274939 is about 4502.7701473648. The cubic root of 20274939 is about 272.6799372696.

The spelling of 20274939 in words is "twenty million, two hundred seventy-four thousand, nine hundred thirty-nine".