15872145 has 8 divisors (see below), whose sum is σ = 25395456. Its totient is φ = 8465136.

The previous prime is 15872137. The next prime is 15872159. The reversal of 15872145 is 54127851.

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

It is not a de Polignac number, because 15872145 - 2³ = 15872137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529057 + ... + 529086.

It is an arithmetic number, because the mean of its divisors is an integer number (3174432).

Almost surely, 2^15872145 is an apocalyptic number.

15872145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15872145 is a deficient number, since it is larger than the sum of its proper divisors (9523311).

15872145 is a wasteful number, since it uses less digits than its factorization.

15872145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058151.

The product of its digits is 11200, while the sum is 33.

The square root of 15872145 is about 3983.9860692528. The cubic root of 15872145 is about 251.3112174783.

Adding to 15872145 its reverse (54127851), we get a palindrome (69999996).

It can be divided in two parts, 158721 and 45, that added together give a triangular number (158766 = T₅₆₃).

The spelling of 15872145 in words is "fifteen million, eight hundred seventy-two thousand, one hundred forty-five".