5681428 has 6 divisors (see below), whose sum is σ = 9942506. Its totient is φ = 2840712.

The previous prime is 5681413. The next prime is 5681447. The reversal of 5681428 is 8241865.

It can be written as a sum of positive squares in only one way, i.e., 4048144 + 1633284 = 2012^2 + 1278^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5681393 and 5681402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710175 + ... + 710182.

Almost surely, 2^5681428 is an apocalyptic number.

It is an amenable number.

5681428 is a deficient number, since it is larger than the sum of its proper divisors (4261078).

5681428 is a wasteful number, since it uses less digits than its factorization.

5681428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420361 (or 1420359 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 5681428 is about 2383.5746264802. The cubic root of 5681428 is about 178.4373791383.

The spelling of 5681428 in words is "five million, six hundred eighty-one thousand, four hundred twenty-eight".