15723423 has 32 divisors (see below), whose sum is σ = 24710400. Its totient is φ = 9864288.

The previous prime is 15723413. The next prime is 15723443. The reversal of 15723423 is 32432751.

It is not a de Polignac number, because 15723423 - 2⁵ = 15723391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15723413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33436 + ... + 33902.

It is an arithmetic number, because the mean of its divisors is an integer number (772200).

Almost surely, 2^15723423 is an apocalyptic number.

15723423 is a deficient number, since it is larger than the sum of its proper divisors (8986977).

15723423 is a wasteful number, since it uses less digits than its factorization.

15723423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 542 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 15723423 is about 3965.2771655964. The cubic root of 15723423 is about 250.5238243324.

The spelling of 15723423 in words is "fifteen million, seven hundred twenty-three thousand, four hundred twenty-three".