11420591 has 16 divisors (see below), whose sum is σ = 14403648. Its totient is φ = 8812800.

The previous prime is 11420579. The next prime is 11420611. The reversal of 11420591 is 19502411.

It is a happy number.

11420591 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11420591 - 2⁶ = 11420527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11420291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2201 + ... + 5261.

It is an arithmetic number, because the mean of its divisors is an integer number (900228).

Almost surely, 2^11420591 is an apocalyptic number.

11420591 is a deficient number, since it is larger than the sum of its proper divisors (2983057).

11420591 is a wasteful number, since it uses less digits than its factorization.

11420591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3122.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 11420591 is about 3379.4364914879. The cubic root of 11420591 is about 225.1971342259.

The spelling of 11420591 in words is "eleven million, four hundred twenty thousand, five hundred ninety-one".