11641590 has 32 divisors (see below), whose sum is σ = 31044960. Its totient is φ = 3104352.

The previous prime is 11641589. The next prime is 11641613. The reversal of 11641590 is 9514611.

11641590 is a `hidden beast` number, since 11 + 64 + 1 + 590 = 666.

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

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 21289 + ... + 21828.

It is an arithmetic number, because the mean of its divisors is an integer number (970155).

Almost surely, 2^11641590 is an apocalyptic number.

11641590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11641590 is an abundant number, since it is smaller than the sum of its proper divisors (19403370).

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

11641590 is a wasteful number, since it uses less digits than its factorization.

11641590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43133 (or 43127 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 11641590 is about 3411.9774325162. The cubic root of 11641590 is about 226.6404549659.

It can be divided in two parts, 11 and 641590, that added together give a square (641601 = 801²).

The spelling of 11641590 in words is "eleven million, six hundred forty-one thousand, five hundred ninety".