19072090 has 8 divisors (see below), whose sum is σ = 34329780. Its totient is φ = 7628832.

The previous prime is 19072073. The next prime is 19072117. The reversal of 19072090 is 9027091.

It can be written as a sum of positive squares in 2 ways, for example, as 17581249 + 1490841 = 4193^2 + 1221^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 953595 + ... + 953614.

Almost surely, 2^19072090 is an apocalyptic number.

19072090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19072090 is a deficient number, since it is larger than the sum of its proper divisors (15257690).

19072090 is a wasteful number, since it uses less digits than its factorization.

19072090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907216.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 19072090 is about 4367.1604046566. The cubic root of 19072090 is about 267.1772215304.

The spelling of 19072090 in words is "nineteen million, seventy-two thousand, ninety".