19790023 has 8 divisors (see below), whose sum is σ = 22859280. Its totient is φ = 16932480.

The previous prime is 19790011. The next prime is 19790033. The reversal of 19790023 is 32009791.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19790023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19790033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52728 + ... + 53101.

It is an arithmetic number, because the mean of its divisors is an integer number (2857410).

Almost surely, 2^19790023 is an apocalyptic number.

19790023 is a deficient number, since it is larger than the sum of its proper divisors (3069257).

19790023 is a wasteful number, since it uses less digits than its factorization.

19790023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105857.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 19790023 is about 4448.5978689920. The cubic root of 19790023 is about 270.4884755859.

The spelling of 19790023 in words is "nineteen million, seven hundred ninety thousand, twenty-three".