10991392 has 12 divisors (see below), whose sum is σ = 21639366. Its totient is φ = 5495680.

The previous prime is 10991381. The next prime is 10991399. The reversal of 10991392 is 29319901.

10991392 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10523536 + 467856 = 3244^2 + 684^2 .

It is not an unprimeable number, because it can be changed into a prime (10991399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171709 + ... + 171772.

Almost surely, 2^10991392 is an apocalyptic number.

It is an amenable number.

10991392 is a deficient number, since it is larger than the sum of its proper divisors (10647974).

10991392 is an equidigital number, since it uses as much as digits as its factorization.

10991392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343491 (or 343483 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 10991392 is about 3315.3268315507. The cubic root of 10991392 is about 222.3399817343.

The spelling of 10991392 in words is "ten million, nine hundred ninety-one thousand, three hundred ninety-two".