11400012 has 36 divisors (see below), whose sum is σ = 31034640. Its totient is φ = 3507552.

The previous prime is 11399989. The next prime is 11400017. The reversal of 11400012 is 21000411.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11399967 and 11400003.

It is not an unprimeable number, because it can be changed into a prime (11400017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11712 + ... + 12647.

Almost surely, 2^11400012 is an apocalyptic number.

11400012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11400012 is an abundant number, since it is smaller than the sum of its proper divisors (19634628).

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

11400012 is a wasteful number, since it uses less digits than its factorization.

11400012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24382 (or 24377 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 11400012 is about 3376.3903802730. The cubic root of 11400012 is about 225.0617904367.

Adding to 11400012 its reverse (21000411), we get a palindrome (32400423).

The spelling of 11400012 in words is "eleven million, four hundred thousand, twelve".