15423023 has 24 divisors (see below), whose sum is σ = 19662720. Its totient is φ = 11840400.

The previous prime is 15423019. The next prime is 15423047. The reversal of 15423023 is 32032451.

It is a happy number.

It is not a de Polignac number, because 15423023 - 2² = 15423019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15422986 and 15423004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15423073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110888 + ... + 111026.

It is an arithmetic number, because the mean of its divisors is an integer number (819280).

Almost surely, 2^15423023 is an apocalyptic number.

15423023 is a deficient number, since it is larger than the sum of its proper divisors (4239697).

15423023 is a wasteful number, since it uses less digits than its factorization.

15423023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 15423023 is about 3927.2156803517. The cubic root of 15423023 is about 248.9181141793.

Adding to 15423023 its reverse (32032451), we get a palindrome (47455474).

The spelling of 15423023 in words is "fifteen million, four hundred twenty-three thousand, twenty-three".