11238491 has 16 divisors (see below), whose sum is σ = 12853728. Its totient is φ = 9734400.

The previous prime is 11238463. The next prime is 11238503. The reversal of 11238491 is 19483211.

It is a cyclic number.

It is not a de Polignac number, because 11238491 - 2¹⁸ = 10976347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11238401) 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, 21311 + ... + 21831.

It is an arithmetic number, because the mean of its divisors is an integer number (803358).

Almost surely, 2^11238491 is an apocalyptic number.

11238491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11238491 is a deficient number, since it is larger than the sum of its proper divisors (1615237).

11238491 is a wasteful number, since it uses less digits than its factorization.

11238491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622.

The product of its digits is 1728, while the sum is 29.

The square root of 11238491 is about 3352.3858668119. The cubic root of 11238491 is about 223.9938016461.

The spelling of 11238491 in words is "eleven million, two hundred thirty-eight thousand, four hundred ninety-one".