Search a number
-
+
228065772 = 223111727771
BaseRepresentation
bin11011001100000…
…00000111101100
3120220010221102110
431212000013230
5431341101042
634344124020
75436345534
oct1546000754
9526127373
10228065772
11107812210
1264466610
1338332a7c
142240a4c4
151505009c
hexd9801ec

228065772 has 24 divisors (see below), whose sum is σ = 580531392. Its totient is φ = 69110800.

The previous prime is 228065737. The next prime is 228065801. The reversal of 228065772 is 277560822.

228065772 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 228065772.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 863754 + ... + 864017.

It is an arithmetic number, because the mean of its divisors is an integer number (24188808).

Almost surely, 2228065772 is an apocalyptic number.

228065772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

228065772 is an abundant number, since it is smaller than the sum of its proper divisors (352465620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228065772 is a wasteful number, since it uses less digits than its factorization.

228065772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727789 (or 1727787 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 228065772 is about 15101.8466420501. The cubic root of 228065772 is about 610.9702127424.

The spelling of 228065772 in words is "two hundred twenty-eight million, sixty-five thousand, seven hundred seventy-two".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 132 1727771 3455542 5183313 6911084 10366626 19005481 20733252 38010962 57016443 76021924 114032886 228065772