3455728 has 10 divisors (see below), whose sum is σ = 6695504. Its totient is φ = 1727856.

The previous prime is 3455723. The next prime is 3455729. The reversal of 3455728 is 8275543.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3455693 and 3455702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3455723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107976 + ... + 108007.

Almost surely, 2^3455728 is an apocalyptic number.

It is an amenable number.

3455728 is a deficient number, since it is larger than the sum of its proper divisors (3239776).

3455728 is a wasteful number, since it uses less digits than its factorization.

3455728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215991 (or 215985 counting only the distinct ones).

The product of its digits is 33600, while the sum is 34.

The square root of 3455728 is about 1858.9588483880. The cubic root of 3455728 is about 151.1865594652.

The spelling of 3455728 in words is "three million, four hundred fifty-five thousand, seven hundred twenty-eight".