11288428 has 24 divisors (see below), whose sum is σ = 20359472. Its totient is φ = 5474304.

The previous prime is 11288383. The next prime is 11288429. The reversal of 11288428 is 82488211.

It is a super-2 number, since 2×11288428² = 254857213422368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11288393 and 11288402.

It is not an unprimeable number, because it can be changed into a prime (11288429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19276 + ... + 19852.

Almost surely, 2^11288428 is an apocalyptic number.

It is an amenable number.

11288428 is a deficient number, since it is larger than the sum of its proper divisors (9071044).

11288428 is a wasteful number, since it uses less digits than its factorization.

11288428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721 (or 719 counting only the distinct ones).

The product of its digits is 8192, while the sum is 34.

The square root of 11288428 is about 3359.8255907115. The cubic root of 11288428 is about 224.3250754192.

The spelling of 11288428 in words is "eleven million, two hundred eighty-eight thousand, four hundred twenty-eight".