15491466 has 32 divisors (see below), whose sum is σ = 35925120. Its totient is φ = 4938912.

The previous prime is 15491461. The next prime is 15491467. The reversal of 15491466 is 66419451.

It is a self number, because there is not a number n which added to its sum of digits gives 15491466.

It is not an unprimeable number, because it can be changed into a prime (15491461) 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 15 ways as a sum of consecutive naturals, for example, 4995 + ... + 7478.

It is an arithmetic number, because the mean of its divisors is an integer number (1122660).

Almost surely, 2^15491466 is an apocalyptic number.

15491466 is an abundant number, since it is smaller than the sum of its proper divisors (20433654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15491466 is a wasteful number, since it uses less digits than its factorization.

15491466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12507 (or 12501 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 15491466 is about 3935.9199686986. The cubic root of 15491466 is about 249.2857801699.

The spelling of 15491466 in words is "fifteen million, four hundred ninety-one thousand, four hundred sixty-six".