10821630 has 32 divisors (see below), whose sum is σ = 26171424. Its totient is φ = 2863616.

The previous prime is 10821589. The next prime is 10821631. The reversal of 10821630 is 3612801.

It is a junction number, because it is equal to n+sod(n) for n = 10821597 and 10821606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10821631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2794 + ... + 5426.

It is an arithmetic number, because the mean of its divisors is an integer number (817857).

Almost surely, 2^10821630 is an apocalyptic number.

10821630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10821630 is an abundant number, since it is smaller than the sum of its proper divisors (15349794).

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

10821630 is a wasteful number, since it uses less digits than its factorization.

10821630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 10821630 is about 3289.6245986434. The cubic root of 10821630 is about 221.1893574423.

The spelling of 10821630 in words is "ten million, eight hundred twenty-one thousand, six hundred thirty".