11428401 has 16 divisors (see below), whose sum is σ = 16087680. Its totient is φ = 7201920.

The previous prime is 11428363. The next prime is 11428409. The reversal of 11428401 is 10482411.

It is a happy number.

It is not a de Polignac number, because 11428401 - 2⁷ = 11428273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11428409) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5211 + ... + 7071.

It is an arithmetic number, because the mean of its divisors is an integer number (1005480).

Almost surely, 2^11428401 is an apocalyptic number.

It is an amenable number.

11428401 is a deficient number, since it is larger than the sum of its proper divisors (4659279).

11428401 is a wasteful number, since it uses less digits than its factorization.

11428401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 11428401 is about 3380.5918120944. The cubic root of 11428401 is about 225.2484564051.

The spelling of 11428401 in words is "eleven million, four hundred twenty-eight thousand, four hundred one".