5781428 has 12 divisors (see below), whose sum is σ = 10712772. Its totient is φ = 2720640.

The previous prime is 5781409. The next prime is 5781431. The reversal of 5781428 is 8241875.

It can be written as a sum of positive squares in 2 ways, for example, as 3341584 + 2439844 = 1828^2 + 1562^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42443 + ... + 42578.

It is an arithmetic number, because the mean of its divisors is an integer number (892731).

Almost surely, 2^5781428 is an apocalyptic number.

It is an amenable number.

5781428 is a deficient number, since it is larger than the sum of its proper divisors (4931344).

5781428 is a wasteful number, since it uses less digits than its factorization.

5781428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85042 (or 85040 counting only the distinct ones).

The product of its digits is 17920, while the sum is 35.

The square root of 5781428 is about 2404.4600225414. The cubic root of 5781428 is about 179.4782007600.

The spelling of 5781428 in words is "five million, seven hundred eighty-one thousand, four hundred twenty-eight".