Search a number
-
+
28595630 = 257795171
BaseRepresentation
bin110110100010…
…1010110101110
31222210210211102
41231011112232
524310030010
62500523102
7465026120
oct155052656
958723742
1028595630
1115161358
1296b0492
135c029bb
143b25210
15279cba5
hex1b455ae

28595630 has 32 divisors (see below), whose sum is σ = 59581440. Its totient is φ = 9678240.

The previous prime is 28595621. The next prime is 28595639. The reversal of 28595630 is 3659582.

It is an interprime number because it is at equal distance from previous prime (28595621) and next prime (28595639).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28595639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2945 + ... + 8115.

It is an arithmetic number, because the mean of its divisors is an integer number (1861920).

Almost surely, 228595630 is an apocalyptic number.

28595630 is an abundant number, since it is smaller than the sum of its proper divisors (30985810).

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

28595630 is a wasteful number, since it uses less digits than its factorization.

28595630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5264.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 28595630 is about 5347.4881954054. The cubic root of 28595630 is about 305.7970017912.

The spelling of 28595630 in words is "twenty-eight million, five hundred ninety-five thousand, six hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 79 158 395 553 790 1106 2765 5171 5530 10342 25855 36197 51710 72394 180985 361970 408509 817018 2042545 2859563 4085090 5719126 14297815 28595630