228728793 has 8 divisors (see below), whose sum is σ = 305136000. Its totient is φ = 152403728.

The previous prime is 228728789. The next prime is 228728839. The reversal of 228728793 is 397827822.

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 228728793 - 2² = 228728789 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228728393) 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, 13713 + ... + 25406.

It is an arithmetic number, because the mean of its divisors is an integer number (38142000).

Almost surely, 2^228728793 is an apocalyptic number.

It is an amenable number.

228728793 is a deficient number, since it is larger than the sum of its proper divisors (76407207).

228728793 is a wasteful number, since it uses less digits than its factorization.

228728793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41071.

The product of its digits is 677376, while the sum is 48.

The square root of 228728793 is about 15123.7823642103. The cubic root of 228728793 is about 611.5617002509.

The spelling of 228728793 in words is "two hundred twenty-eight million, seven hundred twenty-eight thousand, seven hundred ninety-three".