4981728 has 24 divisors (see below), whose sum is σ = 13077288. Its totient is φ = 1660544.

The previous prime is 4981727. The next prime is 4981729. The reversal of 4981728 is 8271894.

It is an interprime number because it is at equal distance from previous prime (4981727) and next prime (4981729).

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×4981728² = 49635227731968, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4981727) 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, 25851 + ... + 26042.

It is an arithmetic number, because the mean of its divisors is an integer number (544887).

Almost surely, 2^4981728 is an apocalyptic number.

4981728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4981728 is an abundant number, since it is smaller than the sum of its proper divisors (8095560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4981728 is a wasteful number, since it uses less digits than its factorization.

4981728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51906 (or 51898 counting only the distinct ones).

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

The square root of 4981728 is about 2231.9784945201. The cubic root of 4981728 is about 170.7890425467.

The spelling of 4981728 in words is "four million, nine hundred eighty-one thousand, seven hundred twenty-eight".