11428915 has 8 divisors (see below), whose sum is σ = 13732848. Its totient is φ = 9131040.

The previous prime is 11428909. The next prime is 11428931. The reversal of 11428915 is 51982411.

It is a happy number.

11428915 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11428915 - 2⁷ = 11428787 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6700 + ... + 8230.

It is an arithmetic number, because the mean of its divisors is an integer number (1716606).

Almost surely, 2^11428915 is an apocalyptic number.

11428915 is a deficient number, since it is larger than the sum of its proper divisors (2303933).

11428915 is a wasteful number, since it uses less digits than its factorization.

11428915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3029.

The product of its digits is 2880, while the sum is 31.

The square root of 11428915 is about 3380.6678334317. The cubic root of 11428915 is about 225.2518332546.

The spelling of 11428915 in words is "eleven million, four hundred twenty-eight thousand, nine hundred fifteen".