21803468 has 12 divisors (see below), whose sum is σ = 38413200. Its totient is φ = 10828272.

The previous prime is 21803449. The next prime is 21803473. The reversal of 21803468 is 86430812.

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, 17696 + ... + 18887.

It is an arithmetic number, because the mean of its divisors is an integer number (3201100).

Almost surely, 2^21803468 is an apocalyptic number.

It is an amenable number.

21803468 is a deficient number, since it is larger than the sum of its proper divisors (16609732).

21803468 is a wasteful number, since it uses less digits than its factorization.

21803468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36736 (or 36734 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 21803468 is about 4669.4183791988. The cubic root of 21803468 is about 279.3670566968.

The spelling of 21803468 in words is "twenty-one million, eight hundred three thousand, four hundred sixty-eight".