10821894 has 36 divisors (see below), whose sum is σ = 23286564. Its totient is φ = 3352128.

The previous prime is 10821893. The next prime is 10821913. The reversal of 10821894 is 49812801.

It is a super-2 number, since 2×10821894² = 234226779494472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10821893) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 136947 + ... + 137025.

It is an arithmetic number, because the mean of its divisors is an integer number (646849).

Almost surely, 2^10821894 is an apocalyptic number.

10821894 is an abundant number, since it is smaller than the sum of its proper divisors (12464670).

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

10821894 is an equidigital number, since it uses as much as digits as its factorization.

10821894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 10821894 is about 3289.6647245578. The cubic root of 10821894 is about 221.1911561090.

The spelling of 10821894 in words is "ten million, eight hundred twenty-one thousand, eight hundred ninety-four".