21794900 has 36 divisors (see below), whose sum is σ = 49788480. Its totient is φ = 8258400.

The previous prime is 21794879. The next prime is 21794933. The reversal of 21794900 is 949712.

It is a congruent number.

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, 3836 + ... + 7635.

Almost surely, 2^21794900 is an apocalyptic number.

21794900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21794900 is an abundant number, since it is smaller than the sum of its proper divisors (27993580).

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

21794900 is a wasteful number, since it uses less digits than its factorization.

21794900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11504 (or 11497 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 21794900 is about 4668.5008300310. The cubic root of 21794900 is about 279.3304580765.

The spelling of 21794900 in words is "twenty-one million, seven hundred ninety-four thousand, nine hundred".