15961408 has 14 divisors (see below), whose sum is σ = 31673546. Its totient is φ = 7980672.

The previous prime is 15961403. The next prime is 15961417. The reversal of 15961408 is 80416951.

It can be written as a sum of positive squares in only one way, i.e., 14197824 + 1763584 = 3768^2 + 1328^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15961403) 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 as a sum of consecutive naturals, namely, 124635 + ... + 124762.

Almost surely, 2^15961408 is an apocalyptic number.

It is an amenable number.

15961408 is a deficient number, since it is larger than the sum of its proper divisors (15712138).

15961408 is an equidigital number, since it uses as much as digits as its factorization.

15961408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249409 (or 249399 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 15961408 is about 3995.1730876146. The cubic root of 15961408 is about 251.7814515689.

The spelling of 15961408 in words is "fifteen million, nine hundred sixty-one thousand, four hundred eight".