21794700 has 36 divisors (see below), whose sum is σ = 63060200. Its totient is φ = 5811840.

The previous prime is 21794693. The next prime is 21794719. The reversal of 21794700 is 749712.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36025 + ... + 36624.

Almost surely, 2^21794700 is an apocalyptic number.

21794700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21794700 is an abundant number, since it is smaller than the sum of its proper divisors (41265500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21794700 is a wasteful number, since it uses less digits than its factorization.

21794700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72666 (or 72659 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 21794700 is about 4668.4794098293. The cubic root of 21794700 is about 279.3296036524.

The spelling of 21794700 in words is "twenty-one million, seven hundred ninety-four thousand, seven hundred".