11391400 has 24 divisors (see below), whose sum is σ = 26485470. Its totient is φ = 4556480.

The previous prime is 11391383. The next prime is 11391421. The reversal of 11391400 is 419311.

It is a happy number.

11391400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 5943844 + 5447556 = 2438^2 + 2334^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28279 + ... + 28678.

Almost surely, 2^11391400 is an apocalyptic number.

11391400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11391400 is an abundant number, since it is smaller than the sum of its proper divisors (15094070).

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

11391400 is a wasteful number, since it uses less digits than its factorization.

11391400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56973 (or 56964 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 11391400 is about 3375.1148128619. The cubic root of 11391400 is about 225.0051027649.

The spelling of 11391400 in words is "eleven million, three hundred ninety-one thousand, four hundred".