21082276 has 12 divisors (see below), whose sum is σ = 37070320. Its totient is φ = 10490760.

The previous prime is 21082253. The next prime is 21082277. The reversal of 21082276 is 67228012.

It is a super-2 number, since 2×21082276² = 888924722680352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21082277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11646 + ... + 13333.

Almost surely, 2^21082276 is an apocalyptic number.

It is an amenable number.

21082276 is a deficient number, since it is larger than the sum of its proper divisors (15988044).

21082276 is a wasteful number, since it uses less digits than its factorization.

21082276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25194 (or 25192 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 21082276 is about 4591.5439669026. The cubic root of 21082276 is about 276.2522548494.

The spelling of 21082276 in words is "twenty-one million, eighty-two thousand, two hundred seventy-six".