21614800 has 30 divisors (see below), whose sum is σ = 51930518. Its totient is φ = 8645760.

The previous prime is 21614797. The next prime is 21614819. The reversal of 21614800 is 841612.

It can be written as a sum of positive squares in 3 ways, for example, as 5550736 + 16064064 = 2356^2 + 4008^2 .

It is a plaindrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26619 + ... + 27418.

Almost surely, 2^21614800 is an apocalyptic number.

21614800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21614800 is an abundant number, since it is smaller than the sum of its proper divisors (30315718).

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

21614800 is a wasteful number, since it uses less digits than its factorization.

21614800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54055 (or 54044 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 21614800 is about 4649.1719692866. The cubic root of 21614800 is about 278.5589224529.

The spelling of 21614800 in words is "twenty-one million, six hundred fourteen thousand, eight hundred".