Search a number
-
+
2638384 = 24723557
BaseRepresentation
bin1010000100001000110000
311222001011221
422010020300
51133412014
6132314424
731266040
oct12041060
94861157
102638384
111542291
12a72a14
13714b98
144c9720
15371b24
hex284230

2638384 has 20 divisors (see below), whose sum is σ = 5842384. Its totient is φ = 1130688.

The previous prime is 2638381. The next prime is 2638403. The reversal of 2638384 is 4838362.

It is a super-2 number, since 2×26383842 = 13922140262912, which contains 22 as substring.

It is a d-powerful number, because it can be written as 213 + 62 + 33 + 83 + 312 + 87 + 45 .

It is not an unprimeable number, because it can be changed into a prime (2638381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11667 + ... + 11890.

22638384 is an apocalyptic number.

It is an amenable number.

2638384 is an abundant number, since it is smaller than the sum of its proper divisors (3204000).

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

2638384 is a wasteful number, since it uses less digits than its factorization.

2638384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23572 (or 23566 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 2638384 is about 1624.3103151800. The cubic root of 2638384 is about 138.1802587333.

The spelling of 2638384 in words is "two million, six hundred thirty-eight thousand, three hundred eighty-four".

Divisors: 1 2 4 7 8 14 16 28 56 112 23557 47114 94228 164899 188456 329798 376912 659596 1319192 2638384