Search a number
-
+
28888360 = 2351938011
BaseRepresentation
bin110111000110…
…0110100101000
32000100200101021
41232030310220
524343411420
62511102224
7500355424
oct156146450
960320337
1028888360
1115341286
129811974
135ca6007
143b9db84
1528097aa
hex1b8cd28

28888360 has 32 divisors (see below), whose sum is σ = 68421600. Its totient is φ = 10946880.

The previous prime is 28888351. The next prime is 28888361. The reversal of 28888360 is 6388882.

It is not an unprimeable number, because it can be changed into a prime (28888361) 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, 18246 + ... + 19765.

It is an arithmetic number, because the mean of its divisors is an integer number (2138175).

Almost surely, 228888360 is an apocalyptic number.

28888360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28888360 is an abundant number, since it is smaller than the sum of its proper divisors (39533240).

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

28888360 is a wasteful number, since it uses less digits than its factorization.

28888360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38041 (or 38037 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 28888360 is about 5374.7892981958. The cubic root of 28888360 is about 306.8369302356.

The spelling of 28888360 in words is "twenty-eight million, eight hundred eighty-eight thousand, three hundred sixty".

Divisors: 1 2 4 5 8 10 19 20 38 40 76 95 152 190 380 760 38011 76022 152044 190055 304088 380110 722209 760220 1444418 1520440 2888836 3611045 5777672 7222090 14444180 28888360