20249844 has 24 divisors (see below), whose sum is σ = 49304640. Its totient is φ = 6456384.

The previous prime is 20249843. The next prime is 20249863. The reversal of 20249844 is 44894202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20249843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36409 + ... + 36960.

It is an arithmetic number, because the mean of its divisors is an integer number (2054360).

Almost surely, 2^20249844 is an apocalyptic number.

It is an amenable number.

20249844 is an abundant number, since it is smaller than the sum of its proper divisors (29054796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20249844 is a wasteful number, since it uses less digits than its factorization.

20249844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73399 (or 73397 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 20249844 is about 4499.9826666333. The cubic root of 20249844 is about 272.5673889951.

The spelling of 20249844 in words is "twenty million, two hundred forty-nine thousand, eight hundred forty-four".