15072923 has 4 divisors (see below), whose sum is σ = 15297960. Its totient is φ = 14847888.

The previous prime is 15072901. The next prime is 15072943. The reversal of 15072923 is 32927051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32927051 = 829 ⋅39719.

It is a cyclic number.

It is not a de Polignac number, because 15072923 - 2⁶ = 15072859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15072943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112418 + ... + 112551.

It is an arithmetic number, because the mean of its divisors is an integer number (3824490).

Almost surely, 2^15072923 is an apocalyptic number.

15072923 is a deficient number, since it is larger than the sum of its proper divisors (225037).

15072923 is an equidigital number, since it uses as much as digits as its factorization.

15072923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225036.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 15072923 is about 3882.3862507484. The cubic root of 15072923 is about 247.0202139423.

Adding to 15072923 its reverse (32927051), we get a palindrome (47999974).

The spelling of 15072923 in words is "fifteen million, seventy-two thousand, nine hundred twenty-three".