10921384 has 16 divisors (see below), whose sum is σ = 20759220. Its totient is φ = 5385600.

The previous prime is 10921373. The next prime is 10921403. The reversal of 10921384 is 48312901.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10692900 + 228484 = 3270^2 + 478^2 .

It is a super-4 number, since 4×10921384⁴ (a number of 29 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8767 + ... + 9934.

Almost surely, 2^10921384 is an apocalyptic number.

It is an amenable number.

10921384 is a deficient number, since it is larger than the sum of its proper divisors (9837836).

10921384 is a wasteful number, since it uses less digits than its factorization.

10921384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18780 (or 18776 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 10921384 is about 3304.7517304633. The cubic root of 10921384 is about 221.8669223800.

The spelling of 10921384 in words is "ten million, nine hundred twenty-one thousand, three hundred eighty-four".