19923007 has 8 divisors (see below), whose sum is σ = 21979440. Its totient is φ = 17941440.

The previous prime is 19922993. The next prime is 19923011. The reversal of 19923007 is 70032991.

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

It is a cyclic number.

It is not a de Polignac number, because 19923007 - 2²³ = 11534399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19923007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19923017) 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, 18157 + ... + 19222.

It is an arithmetic number, because the mean of its divisors is an integer number (2747430).

Almost surely, 2^19923007 is an apocalyptic number.

19923007 is a deficient number, since it is larger than the sum of its proper divisors (2056433).

19923007 is a wasteful number, since it uses less digits than its factorization.

19923007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37433.

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

The square root of 19923007 is about 4463.5195754024. The cubic root of 19923007 is about 271.0929951403.

Adding to 19923007 its reverse (70032991), we get a palindrome (89955998).

The spelling of 19923007 in words is "nineteen million, nine hundred twenty-three thousand, seven".