Search a number
-
+
28836210 = 2351373939
BaseRepresentation
bin110111000000…
…0000101110010
32000021000211210
41232000011302
524340224320
62510020550
7500050404
oct156000562
960230753
1028836210
1115306087
1297a7756
135c88360
143b88b74
1527e90e0
hex1b80172

28836210 has 32 divisors (see below), whose sum is σ = 74531520. Its totient is φ = 7098048.

The previous prime is 28836193. The next prime is 28836229. The reversal of 28836210 is 1263882.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36580 + ... + 37359.

It is an arithmetic number, because the mean of its divisors is an integer number (2329110).

Almost surely, 228836210 is an apocalyptic number.

28836210 is an abundant number, since it is smaller than the sum of its proper divisors (45695310).

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

28836210 is a wasteful number, since it uses less digits than its factorization.

28836210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73962.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 28836210 is about 5369.9357538056. The cubic root of 28836210 is about 306.6521824182.

The spelling of 28836210 in words is "twenty-eight million, eight hundred thirty-six thousand, two hundred ten".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 73939 147878 221817 369695 443634 739390 961207 1109085 1922414 2218170 2883621 4806035 5767242 9612070 14418105 28836210