28830723 has 8 divisors (see below), whose sum is σ = 38520000. Its totient is φ = 19180968.

The previous prime is 28830719. The next prime is 28830731. The reversal of 28830723 is 32703882.

It is a happy number.

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

It is not a de Polignac number, because 28830723 - 2² = 28830719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28830773) 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, 8133 + ... + 11126.

It is an arithmetic number, because the mean of its divisors is an integer number (4815000).

Almost surely, 2^28830723 is an apocalyptic number.

28830723 is a deficient number, since it is larger than the sum of its proper divisors (9689277).

28830723 is a wasteful number, since it uses less digits than its factorization.

28830723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19761.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 28830723 is about 5369.4248295325. The cubic root of 28830723 is about 306.6327310957.

The spelling of 28830723 in words is "twenty-eight million, eight hundred thirty thousand, seven hundred twenty-three".