20274147 has 6 divisors (see below), whose sum is σ = 29284892. Its totient is φ = 13516092.

The previous prime is 20274139. The next prime is 20274151. The reversal of 20274147 is 74147202.

It is a happy number.

It is not a de Polignac number, because 20274147 - 2³ = 20274139 is a prime.

It is a super-2 number, since 2×20274147² = 822082073155218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20274147.

It is not an unprimeable number, because it can be changed into a prime (20274127) 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, 1126333 + ... + 1126350.

Almost surely, 2^20274147 is an apocalyptic number.

20274147 is a deficient number, since it is larger than the sum of its proper divisors (9010745).

20274147 is a wasteful number, since it uses less digits than its factorization.

20274147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2252689 (or 2252686 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 20274147 is about 4502.6822006444. The cubic root of 20274147 is about 272.6763866577.

The spelling of 20274147 in words is "twenty million, two hundred seventy-four thousand, one hundred forty-seven".