20412249 has 16 divisors (see below), whose sum is σ = 31975104. Its totient is φ = 11419200.

The previous prime is 20412233. The next prime is 20412253. The reversal of 20412249 is 94221402.

It is not a de Polignac number, because 20412249 - 2⁴ = 20412233 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20412209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23362 + ... + 24219.

It is an arithmetic number, because the mean of its divisors is an integer number (1998444).

Almost surely, 2^20412249 is an apocalyptic number.

It is an amenable number.

20412249 is a deficient number, since it is larger than the sum of its proper divisors (11562855).

20412249 is a wasteful number, since it uses less digits than its factorization.

20412249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47608.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 20412249 is about 4517.9916998596. The cubic root of 20412249 is about 273.2941187380.

The spelling of 20412249 in words is "twenty million, four hundred twelve thousand, two hundred forty-nine".