Search a number
-
+
28531034 = 272347839
BaseRepresentation
bin110110011010…
…1100101011010
31222200112012222
41230311211122
524300443114
62455304042
7464336600
oct154654532
958615188
1028531034
1115117874
12967b022
135bac48c
143b09870
15278898e
hex1b3595a

28531034 has 24 divisors (see below), whose sum is σ = 49986720. Its totient is φ = 12177816.

The previous prime is 28530979. The next prime is 28531051. The reversal of 28531034 is 43013582.

It is a super-2 number, since 2×285310342 = 1628039802218312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28530994 and 28531012.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33587 + ... + 34425.

It is an arithmetic number, because the mean of its divisors is an integer number (2082780).

Almost surely, 228531034 is an apocalyptic number.

28531034 is a deficient number, since it is larger than the sum of its proper divisors (21455686).

28531034 is a wasteful number, since it uses less digits than its factorization.

28531034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202 (or 1195 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 28531034 is about 5341.4449355956. Note that the first 3 decimals coincide. The cubic root of 28531034 is about 305.5665684968.

The spelling of 28531034 in words is "twenty-eight million, five hundred thirty-one thousand, thirty-four".

Divisors: 1 2 7 14 49 98 347 694 839 1678 2429 4858 5873 11746 17003 34006 41111 82222 291133 582266 2037931 4075862 14265517 28531034