15328963 has 4 divisors (see below), whose sum is σ = 16508128. Its totient is φ = 14149800.

The previous prime is 15328961. The next prime is 15328969. The reversal of 15328963 is 36982351.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15328963 - 2¹ = 15328961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15328961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589563 + ... + 589588.

It is an arithmetic number, because the mean of its divisors is an integer number (4127032).

Almost surely, 2^15328963 is an apocalyptic number.

15328963 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

15328963 is a deficient number, since it is larger than the sum of its proper divisors (1179165).

15328963 is a wasteful number, since it uses less digits than its factorization.

15328963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179164.

The product of its digits is 38880, while the sum is 37.

The square root of 15328963 is about 3915.2219605024. The cubic root of 15328963 is about 248.4110584546.

The spelling of 15328963 in words is "fifteen million, three hundred twenty-eight thousand, nine hundred sixty-three".