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20322086408 = 2313238772
BaseRepresentation
bin10010111011010010…
…100110111000001000
31221110021120221201222
4102323102212320020
5313104423231113
613200312501212
71316412612221
oct227322467010
957407527658
1020322086408
118689319338
123b319aa808
131bbb339700
14daada8248
157de18de08
hex4bb4a6e08

20322086408 has 36 divisors (see below), whose sum is σ = 41271094215. Its totient is φ = 9377005248.

The previous prime is 20322086381. The next prime is 20322086419. The reversal of 20322086408 is 80468022302.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 384081604 + 19938004804 = 19598^2 + 141202^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=100802.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5239766 + ... + 5243642.

Almost surely, 220322086408 is an apocalyptic number.

It is an amenable number.

20322086408 is an abundant number, since it is smaller than the sum of its proper divisors (20949007807).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20322086408 is an frugal number, since it uses more digits than its factorization.

20322086408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7786 (or 3892 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The spelling of 20322086408 in words is "twenty billion, three hundred twenty-two million, eighty-six thousand, four hundred eight".

Divisors: 1 2 4 8 13 26 52 104 169 338 676 1352 3877 7754 15508 31016 50401 100802 201604 403208 655213 1310426 2620852 5241704 15031129 30062258 60124516 120249032 195404677 390809354 781618708 1563237416 2540260801 5080521602 10161043204 20322086408