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11110891 = 111010081
BaseRepresentation
bin101010011000…
…100111101011
3202220111021111
4222120213223
510321022031
61034051151
7163304161
oct52304753
922814244
1011110891
1162a9860
123879ab7
1323c03bc
141693231
15e971b1
hexa989eb

11110891 has 4 divisors (see below), whose sum is σ = 12120984. Its totient is φ = 10100800.

The previous prime is 11110889. The next prime is 11110901. The reversal of 11110891 is 19801111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11110891 - 21 = 11110889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11110831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505030 + ... + 505051.

It is an arithmetic number, because the mean of its divisors is an integer number (3030246).

Almost surely, 211110891 is an apocalyptic number.

11110891 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11110891 is a deficient number, since it is larger than the sum of its proper divisors (1010093).

11110891 is a wasteful number, since it uses less digits than its factorization.

11110891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010092.

The product of its (nonzero) digits is 72, while the sum is 22.

The square root of 11110891 is about 3333.3003165032. The cubic root of 11110891 is about 223.1428431880.

The spelling of 11110891 in words is "eleven million, one hundred ten thousand, eight hundred ninety-one".

Divisors: 1 11 1010081 11110891