15928097 has 4 divisors (see below), whose sum is σ = 16010820. Its totient is φ = 15845376.

The previous prime is 15928091. The next prime is 15928109. The reversal of 15928097 is 79082951.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3845521 + 12082576 = 1961^2 + 3476^2 .

It is a cyclic number.

It is not a de Polignac number, because 15928097 - 2⁸ = 15927841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15928091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41072 + ... + 41457.

It is an arithmetic number, because the mean of its divisors is an integer number (4002705).

Almost surely, 2^15928097 is an apocalyptic number.

It is an amenable number.

15928097 is a deficient number, since it is larger than the sum of its proper divisors (82723).

15928097 is an equidigital number, since it uses as much as digits as its factorization.

15928097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82722.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 15928097 is about 3991.0020045096. The cubic root of 15928097 is about 251.6061760283.

The spelling of 15928097 in words is "fifteen million, nine hundred twenty-eight thousand, ninety-seven".