Search a number
-
+
2581074007 = 23499224891
BaseRepresentation
bin1001100111011000…
…0001000001010111
320122212202010220121
42121312001001113
520241223332012
61104041212411
7120650524051
oct23166010127
96585663817
102581074007
111104a49116
12600491107
13321977635
141a6b168d1
151018e2a07
hex99d81057

2581074007 has 8 divisors (see below), whose sum is σ = 2698704000. Its totient is φ = 2463894840.

The previous prime is 2581073987. The next prime is 2581074061. The reversal of 2581074007 is 7004701852.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2581074007 - 211 = 2581071959 is a prime.

It is a super-2 number, since 2×25810740072 = 13323886059222072098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2581074707) 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, 100969 + ... + 123922.

It is an arithmetic number, because the mean of its divisors is an integer number (337338000).

Almost surely, 22581074007 is an apocalyptic number.

2581074007 is a deficient number, since it is larger than the sum of its proper divisors (117629993).

2581074007 is a wasteful number, since it uses less digits than its factorization.

2581074007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225413.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 2581074007 is about 50804.2715428536. The cubic root of 2581074007 is about 1371.7242585409.

Adding to 2581074007 its reverse (7004701852), we get a palindrome (9585775859).

The spelling of 2581074007 in words is "two billion, five hundred eighty-one million, seventy-four thousand, seven".

Divisors: 1 23 499 11477 224891 5172493 112220609 2581074007