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2680839280 = 24574787213
BaseRepresentation
bin1001111111001010…
…0101110001110000
320220211110202010201
42133302211301300
520442243324110
61122003404544
7123301520650
oct23762456160
96824422121
102680839280
11115629a259
12629983754
13339538342
141b6086360
1510a54cb3a
hex9fca5c70

2680839280 has 40 divisors (see below), whose sum is σ = 7123374432. Its totient is φ = 919144704.

The previous prime is 2680839253. The next prime is 2680839281. The reversal of 2680839280 is 829380862.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2680839280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2680839281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2393047 + ... + 2394166.

Almost surely, 22680839280 is an apocalyptic number.

2680839280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2680839280 is an abundant number, since it is smaller than the sum of its proper divisors (4442535152).

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

2680839280 is a wasteful number, since it uses less digits than its factorization.

2680839280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4787233 (or 4787227 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 2680839280 is about 51776.8218414379. The cubic root of 2680839280 is about 1389.1748946104.

The spelling of 2680839280 in words is "two billion, six hundred eighty million, eight hundred thirty-nine thousand, two hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 35 40 56 70 80 112 140 280 560 4787213 9574426 19148852 23936065 33510491 38297704 47872130 67020982 76595408 95744260 134041964 167552455 191488520 268083928 335104910 382977040 536167856 670209820 1340419640 2680839280