15243385 has 8 divisors (see below), whose sum is σ = 18373320. Its totient is φ = 12140544.

The previous prime is 15243379. The next prime is 15243401. The reversal of 15243385 is 58334251.

15243385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3594816 + 11648569 = 1896^2 + 3413^2 .

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 15243385 - 2⁷ = 15243257 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, 5512 + ... + 7801.

It is an arithmetic number, because the mean of its divisors is an integer number (2296665).

Almost surely, 2^15243385 is an apocalyptic number.

It is an amenable number.

15243385 is a deficient number, since it is larger than the sum of its proper divisors (3129935).

15243385 is a wasteful number, since it uses less digits than its factorization.

15243385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13547.

The product of its digits is 14400, while the sum is 31.

The square root of 15243385 is about 3904.2777821257. The cubic root of 15243385 is about 247.9479219906.

The spelling of 15243385 in words is "fifteen million, two hundred forty-three thousand, three hundred eighty-five".