20344372 has 6 divisors (see below), whose sum is σ = 35602658. Its totient is φ = 10172184.

The previous prime is 20344369. The next prime is 20344403. The reversal of 20344372 is 27344302.

It can be written as a sum of positive squares in only one way, i.e., 17089956 + 3254416 = 4134^2 + 1804^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2543043 + ... + 2543050.

Almost surely, 2^20344372 is an apocalyptic number.

It is an amenable number.

20344372 is a deficient number, since it is larger than the sum of its proper divisors (15258286).

20344372 is a wasteful number, since it uses less digits than its factorization.

20344372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5086097 (or 5086095 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 20344372 is about 4510.4735893252. The cubic root of 20344372 is about 272.9908533657.

Adding to 20344372 its reverse (27344302), we get a palindrome (47688674).

The spelling of 20344372 in words is "twenty million, three hundred forty-four thousand, three hundred seventy-two".