15328949 has 2 divisors, whose sum is σ = 15328950. Its totient is φ = 15328948.

The previous prime is 15328933. The next prime is 15328961. The reversal of 15328949 is 94982351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11356900 + 3972049 = 3370^2 + 1993^2 .

It is a cyclic number.

It is not a de Polignac number, because 15328949 - 2⁴ = 15328933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15328919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7664474 + 7664475.

It is an arithmetic number, because the mean of its divisors is an integer number (7664475).

Almost surely, 2^15328949 is an apocalyptic number.

It is an amenable number.

15328949 is a deficient number, since it is larger than the sum of its proper divisors (1).

15328949 is an equidigital number, since it uses as much as digits as its factorization.

15328949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 15328949 is about 3915.2201726084. The cubic root of 15328949 is about 248.4109828296.

The spelling of 15328949 in words is "fifteen million, three hundred twenty-eight thousand, nine hundred forty-nine".