19942372 has 12 divisors (see below), whose sum is σ = 36102780. Its totient is φ = 9627296.

The previous prime is 19942369. The next prime is 19942397. The reversal of 19942372 is 27324991.

It can be written as a sum of positive squares in 2 ways, for example, as 9144576 + 10797796 = 3024^2 + 3286^2 .

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, 85843 + ... + 86074.

It is an arithmetic number, because the mean of its divisors is an integer number (3008565).

Almost surely, 2^19942372 is an apocalyptic number.

It is an amenable number.

19942372 is a deficient number, since it is larger than the sum of its proper divisors (16160408).

19942372 is a wasteful number, since it uses less digits than its factorization.

19942372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171950 (or 171948 counting only the distinct ones).

The product of its digits is 27216, while the sum is 37.

The square root of 19942372 is about 4465.6883008110. The cubic root of 19942372 is about 271.1808000899.

The spelling of 19942372 in words is "nineteen million, nine hundred forty-two thousand, three hundred seventy-two".