4728381 has 8 divisors (see below), whose sum is σ = 7205184. Its totient is φ = 2701920.

The previous prime is 4728379. The next prime is 4728401. The reversal of 4728381 is 1838274.

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

It is not a de Polignac number, because 4728381 - 2¹ = 4728379 is a prime.

It is a super-2 number, since 2×4728381² = 44715173762322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4728301) 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, 112560 + ... + 112601.

It is an arithmetic number, because the mean of its divisors is an integer number (900648).

Almost surely, 2^4728381 is an apocalyptic number.

It is an amenable number.

4728381 is a deficient number, since it is larger than the sum of its proper divisors (2476803).

4728381 is a wasteful number, since it uses less digits than its factorization.

4728381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225171.

The product of its digits is 10752, while the sum is 33.

The square root of 4728381 is about 2174.4840767410. The cubic root of 4728381 is about 167.8433559739.

The spelling of 4728381 in words is "four million, seven hundred twenty-eight thousand, three hundred eighty-one".