4521428 has 12 divisors (see below), whose sum is σ = 8031072. Its totient is φ = 2226840.

The previous prime is 4521427. The next prime is 4521509. The reversal of 4521428 is 8241254.

It is a happy number.

It is a super-2 number, since 2×4521428² = 40886622318368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4521397 and 4521406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4521421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8168 + ... + 8703.

It is an arithmetic number, because the mean of its divisors is an integer number (669256).

Almost surely, 2^4521428 is an apocalyptic number.

It is an amenable number.

4521428 is a deficient number, since it is larger than the sum of its proper divisors (3509644).

4521428 is a wasteful number, since it uses less digits than its factorization.

4521428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16942 (or 16940 counting only the distinct ones).

The product of its digits is 2560, while the sum is 26.

The square root of 4521428 is about 2126.3649733759. The cubic root of 4521428 is about 165.3579983291.

The spelling of 4521428 in words is "four million, five hundred twenty-one thousand, four hundred twenty-eight".