20249163 has 32 divisors (see below), whose sum is σ = 33868800. Its totient is φ = 11844000.

The previous prime is 20249161. The next prime is 20249167. The reversal of 20249163 is 36194202.

It is not a de Polignac number, because 20249163 - 2¹ = 20249161 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20249161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7438 + ... + 9788.

It is an arithmetic number, because the mean of its divisors is an integer number (1058400).

Almost surely, 2^20249163 is an apocalyptic number.

20249163 is a deficient number, since it is larger than the sum of its proper divisors (13619637).

20249163 is a wasteful number, since it uses less digits than its factorization.

20249163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400 (or 2394 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 20249163 is about 4499.9069990390. The cubic root of 20249163 is about 272.5643334905.

The spelling of 20249163 in words is "twenty million, two hundred forty-nine thousand, one hundred sixty-three".