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8031087073 = 29276934037
BaseRepresentation
bin1110111101011000…
…01010100111100001
3202201200220111100101
413132230022213201
5112421424241243
63404530022401
7403006054012
oct73654124741
922650814311
108031087073
113451380649
121681717a01
139acb08b39
1456287b009
153200db54d
hex1deb0a9e1

8031087073 has 4 divisors (see below), whose sum is σ = 8308021140. Its totient is φ = 7754153008.

The previous prime is 8031087007. The next prime is 8031087089. The reversal of 8031087073 is 3707801308.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3567911824 + 4463175249 = 59732^2 + 66807^2 .

It is a cyclic number.

It is not a de Polignac number, because 8031087073 - 29 = 8031086561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8031087173) 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, 138466990 + ... + 138467047.

It is an arithmetic number, because the mean of its divisors is an integer number (2077005285).

Almost surely, 28031087073 is an apocalyptic number.

It is an amenable number.

8031087073 is a deficient number, since it is larger than the sum of its proper divisors (276934067).

8031087073 is a wasteful number, since it uses less digits than its factorization.

8031087073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276934066.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 8031087073 is about 89616.3326241372. The cubic root of 8031087073 is about 2002.5872410653.

The spelling of 8031087073 in words is "eight billion, thirty-one million, eighty-seven thousand, seventy-three".

Divisors: 1 29 276934037 8031087073