21850466 has 8 divisors (see below), whose sum is σ = 35755344. Its totient is φ = 9932020.

The previous prime is 21850453. The next prime is 21850489. The reversal of 21850466 is 66405812.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496580 + ... + 496623.

It is an arithmetic number, because the mean of its divisors is an integer number (4469418).

Almost surely, 2^21850466 is an apocalyptic number.

21850466 is a deficient number, since it is larger than the sum of its proper divisors (13904878).

21850466 is a wasteful number, since it uses less digits than its factorization.

21850466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993216.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 21850466 is about 4674.4482027294. The cubic root of 21850466 is about 279.5676405428.

The spelling of 21850466 in words is "twenty-one million, eight hundred fifty thousand, four hundred sixty-six".