4168728 has 24 divisors (see below), whose sum is σ = 11290500. Its totient is φ = 1389552.

The previous prime is 4168709. The next prime is 4168741. The reversal of 4168728 is 8278614.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 4168692 and 4168701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28878 + ... + 29021.

Almost surely, 2^4168728 is an apocalyptic number.

It is an amenable number.

4168728 is an abundant number, since it is smaller than the sum of its proper divisors (7121772).

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

4168728 is a wasteful number, since it uses less digits than its factorization.

4168728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57911 (or 57904 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 4168728 is about 2041.7463113717. The cubic root of 4168728 is about 160.9414289989.

The spelling of 4168728 in words is "four million, one hundred sixty-eight thousand, seven hundred twenty-eight".