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228291060 = 22355964489
BaseRepresentation
bin11011001101101…
…11000111110100
3120220120101110110
431212313013310
5431420303220
634353023020
75441304414
oct1546670764
9526511413
10228291060
111079564a8
1264554a70
13383b148a
1422468644
1515096be0
hexd9b71f4

228291060 has 48 divisors (see below), whose sum is σ = 650059200. Its totient is φ = 59844864.

The previous prime is 228291059. The next prime is 228291071. The reversal of 228291060 is 60192822.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28705 + ... + 35784.

It is an arithmetic number, because the mean of its divisors is an integer number (13542900).

Almost surely, 2228291060 is an apocalyptic number.

228291060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228291060 is an abundant number, since it is smaller than the sum of its proper divisors (421768140).

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

228291060 is a wasteful number, since it uses less digits than its factorization.

228291060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64560 (or 64558 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 228291060 is about 15109.3037562953. The cubic root of 228291060 is about 611.1713227970.

The spelling of 228291060 in words is "two hundred twenty-eight million, two hundred ninety-one thousand, sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 59 60 118 177 236 295 354 590 708 885 1180 1770 3540 64489 128978 193467 257956 322445 386934 644890 773868 967335 1289780 1934670 3804851 3869340 7609702 11414553 15219404 19024255 22829106 38048510 45658212 57072765 76097020 114145530 228291060