19100072 has 16 divisors (see below), whose sum is σ = 35920500. Its totient is φ = 9521280.

The previous prime is 19100071. The next prime is 19100077. The reversal of 19100072 is 27000191.

It can be written as a sum of positive squares in 2 ways, for example, as 17859076 + 1240996 = 4226^2 + 1114^2 .

It is not an unprimeable number, because it can be changed into a prime (19100071) by changing a digit.

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, 629 + ... + 6212.

Almost surely, 2^19100072 is an apocalyptic number.

It is an amenable number.

19100072 is a deficient number, since it is larger than the sum of its proper divisors (16820428).

19100072 is a wasteful number, since it uses less digits than its factorization.

19100072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7196 (or 7192 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 19100072 is about 4370.3629139924. The cubic root of 19100072 is about 267.3078224893.

The spelling of 19100072 in words is "nineteen million, one hundred thousand, seventy-two".