20249344 has 36 divisors (see below), whose sum is σ = 40949496. Its totient is φ = 9992192.

The previous prime is 20249321. The next prime is 20249353. The reversal of 20249344 is 44394202.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 20772 + ... + 21724.

It is an arithmetic number, because the mean of its divisors is an integer number (1137486).

Almost surely, 2^20249344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20249344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20474748).

20249344 is an abundant number, since it is smaller than the sum of its proper divisors (20700152).

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

20249344 is an frugal number, since it uses more digits than its factorization.

20249344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 20249344 is about 4499.9271105208. The cubic root of 20249344 is about 272.5651456063.

The spelling of 20249344 in words is "twenty million, two hundred forty-nine thousand, three hundred forty-four".