10821738 has 16 divisors (see below), whose sum is σ = 21843360. Its totient is φ = 3573936.

The previous prime is 10821719. The next prime is 10821757. The reversal of 10821738 is 83712801.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10821719) and next prime (10821757).

It is a super-2 number, since 2×10821738² = 234220026681288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7620 + ... + 8927.

It is an arithmetic number, because the mean of its divisors is an integer number (1365210).

Almost surely, 2^10821738 is an apocalyptic number.

10821738 is an abundant number, since it is smaller than the sum of its proper divisors (11021622).

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

10821738 is a wasteful number, since it uses less digits than its factorization.

10821738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16661.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 10821738 is about 3289.6410138494. The cubic root of 10821738 is about 221.1900932640.

The spelling of 10821738 in words is "ten million, eight hundred twenty-one thousand, seven hundred thirty-eight".