228722511 has 8 divisors (see below), whose sum is σ = 318222720. Its totient is φ = 145851992.

The previous prime is 228722503. The next prime is 228722561. The reversal of 228722511 is 115227822.

228722511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 228722511 - 2³ = 228722503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228722561) 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, 1657341 + ... + 1657478.

It is an arithmetic number, because the mean of its divisors is an integer number (39777840).

Almost surely, 2^228722511 is an apocalyptic number.

228722511 is a deficient number, since it is larger than the sum of its proper divisors (89500209).

228722511 is a wasteful number, since it uses less digits than its factorization.

228722511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314845.

The product of its digits is 4480, while the sum is 30.

The square root of 228722511 is about 15123.5746766431. The cubic root of 228722511 is about 611.5561013847.

The spelling of 228722511 in words is "two hundred twenty-eight million, seven hundred twenty-two thousand, five hundred eleven".