11745810 has 80 divisors (see below), whose sum is σ = 33480216. Its totient is φ = 2944512.

The previous prime is 11745809. The next prime is 11745821. The reversal of 11745810 is 1854711.

11745810 is a `hidden beast` number, since 11 + 74 + 581 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8139609 + 3606201 = 2853^2 + 1899^2 .

It is a super-2 number, since 2×11745810² = 275928105112200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

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 39 ways as a sum of consecutive naturals, for example, 13344 + ... + 14196.

Almost surely, 2^11745810 is an apocalyptic number.

11745810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11745810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16740108).

11745810 is an abundant number, since it is smaller than the sum of its proper divisors (21734406).

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

11745810 is a wasteful number, since it uses less digits than its factorization.

11745810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889 (or 880 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 11745810 is about 3427.2160713909. The cubic root of 11745810 is about 227.3147709369.

The spelling of 11745810 in words is "eleven million, seven hundred forty-five thousand, eight hundred ten".