20136249 has 16 divisors (see below), whose sum is σ = 34093440. Its totient is φ = 11506320.

The previous prime is 20136241. The next prime is 20136301. The reversal of 20136249 is 94263102.

20136249 is a `hidden beast` number, since 20 + 13 + 624 + 9 = 666.

It is not a de Polignac number, because 20136249 - 2³ = 20136241 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 (20136241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53082 + ... + 53459.

It is an arithmetic number, because the mean of its divisors is an integer number (2130840).

Almost surely, 2^20136249 is an apocalyptic number.

It is an amenable number.

20136249 is a deficient number, since it is larger than the sum of its proper divisors (13957191).

20136249 is a wasteful number, since it uses less digits than its factorization.

20136249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106557 (or 106551 counting only the distinct ones).

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

The square root of 20136249 is about 4487.3432006032. The cubic root of 20136249 is about 272.0567616906.

The spelling of 20136249 in words is "twenty million, one hundred thirty-six thousand, two hundred forty-nine".