20274399 has 6 divisors (see below), whose sum is σ = 29285256. Its totient is φ = 13516260.

The previous prime is 20274391. The next prime is 20274413. The reversal of 20274399 is 99347202.

It is not a de Polignac number, because 20274399 - 2³ = 20274391 is a prime.

It is a super-2 number, since 2×20274399² = 822102509622402, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20274391) 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, 1126347 + ... + 1126364.

It is an arithmetic number, because the mean of its divisors is an integer number (4880876).

Almost surely, 2^20274399 is an apocalyptic number.

20274399 is a deficient number, since it is larger than the sum of its proper divisors (9010857).

20274399 is a wasteful number, since it uses less digits than its factorization.

20274399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252717 (or 2252714 counting only the distinct ones).

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

The square root of 20274399 is about 4502.7101838781. The cubic root of 20274399 is about 272.6775164079.

The spelling of 20274399 in words is "twenty million, two hundred seventy-four thousand, three hundred ninety-nine".