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2858940280 = 2357231211223
BaseRepresentation
bin1010101001100111…
…1111011101111000
321101020121012210001
42222121333131320
521323342042110
61151405002344
7130563406600
oct25231773570
97336535701
102858940280
111237885169
126795533b4
133673c5a51
141d19a7c00
1511aecd63a
hexaa67f778

2858940280 has 192 divisors, whose sum is σ = 7795630080. Its totient is φ = 939859200.

The previous prime is 2858940251. The next prime is 2858940281. The reversal of 2858940280 is 820498582.

It is a self number, because there is not a number n which added to its sum of digits gives 2858940280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2858940281) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12820249 + ... + 12820471.

It is an arithmetic number, because the mean of its divisors is an integer number (40602240).

Almost surely, 22858940280 is an apocalyptic number.

2858940280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2858940280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3897815040).

2858940280 is an abundant number, since it is smaller than the sum of its proper divisors (4936689800).

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

2858940280 is a wasteful number, since it uses less digits than its factorization.

2858940280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 46.

The square root of 2858940280 is about 53469.0590902814. The cubic root of 2858940280 is about 1419.2809094696.

The spelling of 2858940280 in words is "two billion, eight hundred fifty-eight million, nine hundred forty thousand, two hundred eighty".