21466486 has 4 divisors (see below), whose sum is σ = 32199732. Its totient is φ = 10733242.

The previous prime is 21466457. The next prime is 21466513. The reversal of 21466486 is 68466412.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5366620 + ... + 5366623.

It is an arithmetic number, because the mean of its divisors is an integer number (8049933).

Almost surely, 2^21466486 is an apocalyptic number.

21466486 is a deficient number, since it is larger than the sum of its proper divisors (10733246).

21466486 is a wasteful number, since it uses less digits than its factorization.

21466486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10733245.

The product of its digits is 55296, while the sum is 37.

The square root of 21466486 is about 4633.1939307566. The cubic root of 21466486 is about 277.9203315350.

It can be divided in two parts, 21466 and 486, that added together give a cube (21952 = 28³).

The spelling of 21466486 in words is "twenty-one million, four hundred sixty-six thousand, four hundred eighty-six".