11491400 has 24 divisors (see below), whose sum is σ = 26717970. Its totient is φ = 4596480.

The previous prime is 11491399. The next prime is 11491427. The reversal of 11491400 is 419411.

It can be written as a sum of positive squares in 3 ways, for example, as 9647236 + 1844164 = 3106^2 + 1358^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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 5 ways as a sum of consecutive naturals, for example, 28529 + ... + 28928.

Almost surely, 2^11491400 is an apocalyptic number.

11491400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11491400 is an abundant number, since it is smaller than the sum of its proper divisors (15226570).

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

11491400 is a wasteful number, since it uses less digits than its factorization.

11491400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57473 (or 57464 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 11491400 is about 3389.8967535900. The cubic root of 11491400 is about 225.6615918379.

The spelling of 11491400 in words is "eleven million, four hundred ninety-one thousand, four hundred".