15632961 has 8 divisors (see below), whose sum is σ = 20977344. Its totient is φ = 10355280.

The previous prime is 15632957. The next prime is 15632963. The reversal of 15632961 is 16923651.

It is a happy number.

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

It is not a de Polignac number, because 15632961 - 2² = 15632957 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (15632963) 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 7 ways as a sum of consecutive naturals, for example, 16125 + ... + 17066.

It is an arithmetic number, because the mean of its divisors is an integer number (2622168).

Almost surely, 2^15632961 is an apocalyptic number.

It is an amenable number.

15632961 is a deficient number, since it is larger than the sum of its proper divisors (5344383).

15632961 is a wasteful number, since it uses less digits than its factorization.

15632961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33351.

The product of its digits is 9720, while the sum is 33.

The square root of 15632961 is about 3953.8539426742. The cubic root of 15632961 is about 250.0424514578.

The spelling of 15632961 in words is "fifteen million, six hundred thirty-two thousand, nine hundred sixty-one".