4728981 has 8 divisors (see below), whose sum is σ = 6459264. Its totient is φ = 3075680.

The previous prime is 4728973. The next prime is 4728989. The reversal of 4728981 is 1898274.

It is an interprime number because it is at equal distance from previous prime (4728973) and next prime (4728989).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4728981 - 2³ = 4728973 is a prime.

It is a super-3 number, since 3×4728981³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

4728981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4728989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19101 + ... + 19346.

It is an arithmetic number, because the mean of its divisors is an integer number (807408).

Almost surely, 2^4728981 is an apocalyptic number.

4728981 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4728981 is a deficient number, since it is larger than the sum of its proper divisors (1730283).

4728981 is a wasteful number, since it uses less digits than its factorization.

4728981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38491.

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

The square root of 4728981 is about 2174.6220361249. The cubic root of 4728981 is about 167.8504550743.

It can be divided in two parts, 472 and 8981, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 4728981 in words is "four million, seven hundred twenty-eight thousand, nine hundred eighty-one".