15480866 has 4 divisors (see below), whose sum is σ = 23221302. Its totient is φ = 7740432.

The previous prime is 15480853. The next prime is 15480869. The reversal of 15480866 is 66808451.

15480866 is nontrivially palindromic in base 14.

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

It can be written as a sum of positive squares in only one way, i.e., 13579225 + 1901641 = 3685^2 + 1379^2 .

It is not an unprimeable number, because it can be changed into a prime (15480869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3870215 + ... + 3870218.

Almost surely, 2^15480866 is an apocalyptic number.

15480866 is a deficient number, since it is larger than the sum of its proper divisors (7740436).

15480866 is an equidigital number, since it uses as much as digits as its factorization.

15480866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7740435.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 15480866 is about 3934.5731661770. The cubic root of 15480866 is about 249.2289094560.

The spelling of 15480866 in words is "fifteen million, four hundred eighty thousand, eight hundred sixty-six".