11878728 has 32 divisors (see below), whose sum is σ = 29788800. Its totient is φ = 3947328.

The previous prime is 11878709. The next prime is 11878729. The reversal of 11878728 is 82787811.

It is a super-2 number, since 2×11878728² = 282208357795968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11878728.

It is not an unprimeable number, because it can be changed into a prime (11878729) 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, 10578 + ... + 11646.

It is an arithmetic number, because the mean of its divisors is an integer number (930900).

Almost surely, 2^11878728 is an apocalyptic number.

It is an amenable number.

11878728 is an abundant number, since it is smaller than the sum of its proper divisors (17910072).

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

11878728 is a wasteful number, since it uses less digits than its factorization.

11878728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541 (or 1537 counting only the distinct ones).

The product of its digits is 50176, while the sum is 42.

The square root of 11878728 is about 3446.5530606680. The cubic root of 11878728 is about 228.1690036588.

The spelling of 11878728 in words is "eleven million, eight hundred seventy-eight thousand, seven hundred twenty-eight".