11291590 has 8 divisors (see below), whose sum is σ = 20324880. Its totient is φ = 4516632.

The previous prime is 11291563. The next prime is 11291591. The reversal of 11291590 is 9519211.

11291590 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×11291590³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11291591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564570 + ... + 564589.

It is an arithmetic number, because the mean of its divisors is an integer number (2540610).

Almost surely, 2^11291590 is an apocalyptic number.

11291590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11291590 is a deficient number, since it is larger than the sum of its proper divisors (9033290).

11291590 is a wasteful number, since it uses less digits than its factorization.

11291590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129166.

The product of its (nonzero) digits is 810, while the sum is 28.

The square root of 11291590 is about 3360.2961179039. The cubic root of 11291590 is about 224.3460186858.

It can be divided in two parts, 11291 and 590, that added together give a square (11881 = 109²).

The spelling of 11291590 in words is "eleven million, two hundred ninety-one thousand, five hundred ninety".