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88900081 = 547162523
BaseRepresentation
bin1010100110010…
…00000111110001
320012021120222121
411103020013301
5140224300311
612453234241
72126431624
oct523100761
9205246877
1088900081
11461aaa46
1225932981
13155583ca
14bb41dbb
157c10b71
hex54c81f1

88900081 has 4 divisors (see below), whose sum is σ = 89063152. Its totient is φ = 88737012.

The previous prime is 88900067. The next prime is 88900087. The reversal of 88900081 is 18000988.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 88900081 - 213 = 88891889 is a prime.

It is a super-2 number, since 2×889000812 = 15806448803613122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88900087) 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, 80715 + ... + 81808.

It is an arithmetic number, because the mean of its divisors is an integer number (22265788).

Almost surely, 288900081 is an apocalyptic number.

It is an amenable number.

88900081 is a deficient number, since it is larger than the sum of its proper divisors (163071).

88900081 is a wasteful number, since it uses less digits than its factorization.

88900081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163070.

The product of its (nonzero) digits is 4608, while the sum is 34.

The square root of 88900081 is about 9428.6839484628. The cubic root of 88900081 is about 446.3073635219.

The spelling of 88900081 in words is "eighty-eight million, nine hundred thousand, eighty-one".

Divisors: 1 547 162523 88900081