Search a number
-
+
228246880 = 2551426543
BaseRepresentation
bin11011001101011…
…00010101100000
3120220111010212011
431212230111200
5431412400010
634352042304
75441031541
oct1546542540
9526433764
10228246880
11107926294
1264533394
1338397334
14224564c8
1515088a8a
hexd9ac560

228246880 has 24 divisors (see below), whose sum is σ = 539233632. Its totient is φ = 91298688.

The previous prime is 228246859. The next prime is 228246883. The reversal of 228246880 is 88642822.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228246883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713112 + ... + 713431.

It is an arithmetic number, because the mean of its divisors is an integer number (22468068).

Almost surely, 2228246880 is an apocalyptic number.

228246880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228246880 is an abundant number, since it is smaller than the sum of its proper divisors (310986752).

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

228246880 is a wasteful number, since it uses less digits than its factorization.

228246880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426558 (or 1426550 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 228246880 is about 15107.8416724561. The cubic root of 228246880 is about 611.1318946344.

The spelling of 228246880 in words is "two hundred twenty-eight million, two hundred forty-six thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 1426543 2853086 5706172 7132715 11412344 14265430 22824688 28530860 45649376 57061720 114123440 228246880