4928781 has 16 divisors (see below), whose sum is σ = 7721280. Its totient is φ = 2757120.

The previous prime is 4928779. The next prime is 4928797. The reversal of 4928781 is 1878294.

It is not a de Polignac number, because 4928781 - 2¹ = 4928779 is a prime.

It is a super-2 number, since 2×4928781² = 48585764291922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4928761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5316 + ... + 6173.

It is an arithmetic number, because the mean of its divisors is an integer number (482580).

Almost surely, 2^4928781 is an apocalyptic number.

It is an amenable number.

4928781 is a deficient number, since it is larger than the sum of its proper divisors (2792499).

4928781 is a wasteful number, since it uses less digits than its factorization.

4928781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11516.

The product of its digits is 32256, while the sum is 39.

The square root of 4928781 is about 2220.0858091524. The cubic root of 4928781 is about 170.1818239149.

The spelling of 4928781 in words is "four million, nine hundred twenty-eight thousand, seven hundred eighty-one".