20274089 has 4 divisors (see below), whose sum is σ = 22117200. Its totient is φ = 18430980.

The previous prime is 20274073. The next prime is 20274091. The reversal of 20274089 is 98047202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20274089 - 2⁴ = 20274073 is a prime.

It is a super-2 number, since 2×20274089² = 822077369559842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20274019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921539 + ... + 921560.

It is an arithmetic number, because the mean of its divisors is an integer number (5529300).

Almost surely, 2^20274089 is an apocalyptic number.

It is an amenable number.

20274089 is a deficient number, since it is larger than the sum of its proper divisors (1843111).

20274089 is a wasteful number, since it uses less digits than its factorization.

20274089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843110.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 20274089 is about 4502.6757600342. The cubic root of 20274089 is about 272.6761266345.

It can be divided in two parts, 2027 and 4089, that added together give a palindrome (6116).

The spelling of 20274089 in words is "twenty million, two hundred seventy-four thousand, eighty-nine".