21076200 has 120 divisors (see below), whose sum is σ = 73257030. Its totient is φ = 5616000.

The previous prime is 21076189. The next prime is 21076213. The reversal of 21076200 is 267012.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 7986276 + 13089924 = 2826^2 + 3618^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 15550 + ... + 16850.

Almost surely, 2^21076200 is an apocalyptic number.

21076200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21076200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36628515).

21076200 is an abundant number, since it is smaller than the sum of its proper divisors (52180830).

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

21076200 is a wasteful number, since it uses less digits than its factorization.

21076200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329 (or 1311 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 21076200 is about 4590.8822681485. The cubic root of 21076200 is about 276.2257132816.

The spelling of 21076200 in words is "twenty-one million, seventy-six thousand, two hundred".