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80870884 = 2283243587
BaseRepresentation
bin1001101000111…
…11110111100100
312122011122222221
410310133313210
5131200332014
612005202124
72001251113
oct464376744
9178148887
1080870884
1141716546
1223100344
13139a68c3
14aa51c7a
157176b24
hex4d1fde4

80870884 has 12 divisors (see below), whose sum is σ = 143229744. Its totient is φ = 39948104.

The previous prime is 80870869. The next prime is 80870891. The reversal of 80870884 is 48807808.

It is a self number, because there is not a number n which added to its sum of digits gives 80870884.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121462 + ... + 122125.

It is an arithmetic number, because the mean of its divisors is an integer number (11935812).

Almost surely, 280870884 is an apocalyptic number.

It is an amenable number.

80870884 is a deficient number, since it is larger than the sum of its proper divisors (62358860).

80870884 is a wasteful number, since it uses less digits than its factorization.

80870884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243674 (or 243672 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 43.

The square root of 80870884 is about 8992.8240280793. The cubic root of 80870884 is about 432.4448506869. Note that the first 3 decimals are identical.

The spelling of 80870884 in words is "eighty million, eight hundred seventy thousand, eight hundred eighty-four".

Divisors: 1 2 4 83 166 332 243587 487174 974348 20217721 40435442 80870884