4288428 has 36 divisors (see below), whose sum is σ = 10930920. Its totient is φ = 1417536.

The previous prime is 4288397. The next prime is 4288439. The reversal of 4288428 is 8248824.

4288428 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×4288428² = 36781229422368, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 4288392 and 4288401.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4576 + ... + 5432.

Almost surely, 2^4288428 is an apocalyptic number.

It is an amenable number.

4288428 is an abundant number, since it is smaller than the sum of its proper divisors (6642492).

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

4288428 is a wasteful number, since it uses less digits than its factorization.

4288428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006 (or 1001 counting only the distinct ones).

The product of its digits is 32768, while the sum is 36.

The square root of 4288428 is about 2070.8519985745. The cubic root of 4288428 is about 162.4673291321.

The spelling of 4288428 in words is "four million, two hundred eighty-eight thousand, four hundred twenty-eight".