4781428 has 12 divisors (see below), whose sum is σ = 8562400. Its totient is φ = 2335032.

The previous prime is 4781417. The next prime is 4781429. The reversal of 4781428 is 8241874.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4781393 and 4781402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4781429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13728 + ... + 14071.

Almost surely, 2^4781428 is an apocalyptic number.

It is an amenable number.

4781428 is a deficient number, since it is larger than the sum of its proper divisors (3780972).

4781428 is a wasteful number, since it uses less digits than its factorization.

4781428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27846 (or 27844 counting only the distinct ones).

The product of its digits is 14336, while the sum is 34.

The square root of 4781428 is about 2186.6476625190. The cubic root of 4781428 is about 168.4686930950.

The spelling of 4781428 in words is "four million, seven hundred eighty-one thousand, four hundred twenty-eight".