Search a number
-
+
28313034 = 236916829
BaseRepresentation
bin110110000000…
…0010111001010
31222021110011220
41230000113022
524222004114
62450502510
7462441201
oct154002712
958243156
1028313034
1114a89002
129594a36
135b34199
143a90238
1527440a9
hex1b005ca

28313034 has 16 divisors (see below), whose sum is σ = 56716320. Its totient is φ = 9422640.

The previous prime is 28313017. The next prime is 28313063. The reversal of 28313034 is 43031382.

It is a junction number, because it is equal to n+sod(n) for n = 28312995 and 28313013.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732 + ... + 7560.

It is an arithmetic number, because the mean of its divisors is an integer number (3544770).

Almost surely, 228313034 is an apocalyptic number.

28313034 is an abundant number, since it is smaller than the sum of its proper divisors (28403286).

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

28313034 is a wasteful number, since it uses less digits than its factorization.

28313034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7525.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 28313034 is about 5320.9993422289. Note that the first 3 decimals coincide. The cubic root of 28313034 is about 304.7863199198.

The spelling of 28313034 in words is "twenty-eight million, three hundred thirteen thousand, thirty-four".

Divisors: 1 2 3 6 691 1382 2073 4146 6829 13658 20487 40974 4718839 9437678 14156517 28313034