19907044 has 6 divisors (see below), whose sum is σ = 34837334. Its totient is φ = 9953520.

The previous prime is 19907039. The next prime is 19907057. The reversal of 19907044 is 44070991.

It can be written as a sum of positive squares in only one way, i.e., 18164644 + 1742400 = 4262^2 + 1320^2 .

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, 2488377 + ... + 2488384.

Almost surely, 2^19907044 is an apocalyptic number.

It is an amenable number.

19907044 is a deficient number, since it is larger than the sum of its proper divisors (14930290).

19907044 is a wasteful number, since it uses less digits than its factorization.

19907044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4976765 (or 4976763 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 19907044 is about 4461.7310541986. The cubic root of 19907044 is about 271.0205727768.

The spelling of 19907044 in words is "nineteen million, nine hundred seven thousand, forty-four".