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2680808694 = 23895579013
BaseRepresentation
bin1001111111001001…
…1110010011110110
320220211102012011220
42133302132103312
520442241334234
61122003011210
7123301332534
oct23762362366
96824365156
102680808694
111156279283
12629969b06
13339527445
141b6079154
1510a543a49
hex9fc9e4f6

2680808694 has 32 divisors (see below), whose sum is σ = 5432196960. Its totient is φ = 881878272.

The previous prime is 2680808687. The next prime is 2680808729. The reversal of 2680808694 is 4968080862.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292932 + ... + 301944.

It is an arithmetic number, because the mean of its divisors is an integer number (169756155).

Almost surely, 22680808694 is an apocalyptic number.

2680808694 is an abundant number, since it is smaller than the sum of its proper divisors (2751388266).

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

2680808694 is a wasteful number, since it uses less digits than its factorization.

2680808694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9664.

The product of its (nonzero) digits is 1327104, while the sum is 51.

The square root of 2680808694 is about 51776.5264767732. The cubic root of 2680808694 is about 1389.1696115056.

The spelling of 2680808694 in words is "two billion, six hundred eighty million, eight hundred eight thousand, six hundred ninety-four".

Divisors: 1 2 3 6 89 178 267 534 557 1114 1671 3342 9013 18026 27039 49573 54078 99146 148719 297438 802157 1604314 2406471 4812942 5020241 10040482 15060723 30121446 446801449 893602898 1340404347 2680808694