10891930 has 16 divisors (see below), whose sum is σ = 22406400. Its totient is φ = 3734352.

The previous prime is 10891919. The next prime is 10891939. The reversal of 10891930 is 3919801.

It is a junction number, because it is equal to n+sod(n) for n = 10891892 and 10891901.

It is not an unprimeable number, because it can be changed into a prime (10891939) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 77730 + ... + 77869.

It is an arithmetic number, because the mean of its divisors is an integer number (1400400).

Almost surely, 2^10891930 is an apocalyptic number.

10891930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10891930 is an abundant number, since it is smaller than the sum of its proper divisors (11514470).

10891930 is a wasteful number, since it uses less digits than its factorization.

10891930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155613.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 10891930 is about 3300.2924112872. The cubic root of 10891930 is about 221.6672910328.

The spelling of 10891930 in words is "ten million, eight hundred ninety-one thousand, nine hundred thirty".