Search a number
-
+
87422242007 = 731197564959
BaseRepresentation
bin101000101101011000…
…1011000110011010111
322100122121101000221002
41101122301120303113
52413020043221012
6104054454013515
76213255540062
oct1213261306327
9270577330832
1087422242007
1134091638391
1214b3964729b
138322a690a9
1443348098d9
152419de17c2
hex145ac58cd7

87422242007 has 4 divisors (see below), whose sum is σ = 88619807040. Its totient is φ = 86224676976.

The previous prime is 87422241983. The next prime is 87422242021. The reversal of 87422242007 is 70024222478.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87422242007 - 214 = 87422225623 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 (87422242057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598782407 + ... + 598782552.

It is an arithmetic number, because the mean of its divisors is an integer number (22154951760).

Almost surely, 287422242007 is an apocalyptic number.

87422242007 is a deficient number, since it is larger than the sum of its proper divisors (1197565033).

87422242007 is a wasteful number, since it uses less digits than its factorization.

87422242007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197565032.

The product of its (nonzero) digits is 100352, while the sum is 38.

The spelling of 87422242007 in words is "eighty-seven billion, four hundred twenty-two million, two hundred forty-two thousand, seven".

Divisors: 1 73 1197564959 87422242007