Search a number
-
+
2638085 = 51074931
BaseRepresentation
bin1010000100000100000101
311222000202212
422010010011
51133404320
6132313205
731265132
oct12040405
94860685
102638085
11154203a
12a72805
137149c8
144c9589
153719c5
hex284105

2638085 has 8 divisors (see below), whose sum is σ = 3195936. Its totient is φ = 2090320.

The previous prime is 2638073. The next prime is 2638087. The reversal of 2638085 is 5808362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-2638085 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1931 + ... + 3000.

It is an arithmetic number, because the mean of its divisors is an integer number (399492).

22638085 is an apocalyptic number.

It is an amenable number.

2638085 is a deficient number, since it is larger than the sum of its proper divisors (557851).

2638085 is a wasteful number, since it uses less digits than its factorization.

2638085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5043.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 2638085 is about 1624.2182735088. The cubic root of 2638085 is about 138.1750386873.

The spelling of 2638085 in words is "two million, six hundred thirty-eight thousand, eighty-five".

Divisors: 1 5 107 535 4931 24655 527617 2638085