21450862 has 8 divisors (see below), whose sum is σ = 32222736. Its totient is φ = 10709952.

The previous prime is 21450859. The next prime is 21450887. The reversal of 21450862 is 26805412.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21450862.

It is a congruent number.

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, 5923 + ... + 8830.

It is an arithmetic number, because the mean of its divisors is an integer number (4027842).

Almost surely, 2^21450862 is an apocalyptic number.

21450862 is a deficient number, since it is larger than the sum of its proper divisors (10771874).

21450862 is a wasteful number, since it uses less digits than its factorization.

21450862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15482.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 21450862 is about 4631.5075299518. The cubic root of 21450862 is about 277.8528887134.

It can be divided in two parts, 214 and 50862, that added together give a square (51076 = 226²).

The spelling of 21450862 in words is "twenty-one million, four hundred fifty thousand, eight hundred sixty-two".