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2800052780 = 225720000377
BaseRepresentation
bin1010011011100101…
…0110101000101100
321020010210102022112
42212321112220230
521213303142110
61141502503152
7126250025120
oct24671265054
97203712275
102800052780
111207614108
12661894ab8
13358148285
141c7c39580
15115c4a405
hexa6e56a2c

2800052780 has 24 divisors (see below), whose sum is σ = 6720127008. Its totient is φ = 960018048.

The previous prime is 2800052771. The next prime is 2800052789. The reversal of 2800052780 is 872500082.

2800052780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2800052771) and next prime (2800052789).

It is not an unprimeable number, because it can be changed into a prime (2800052789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10000049 + ... + 10000328.

It is an arithmetic number, because the mean of its divisors is an integer number (280005292).

Almost surely, 22800052780 is an apocalyptic number.

2800052780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2800052780 is an abundant number, since it is smaller than the sum of its proper divisors (3920074228).

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

2800052780 is a wasteful number, since it uses less digits than its factorization.

2800052780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20000393 (or 20000391 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2800052780 is about 52915.5249430637. The cubic root of 2800052780 is about 1409.4686024627.

The spelling of 2800052780 in words is "two billion, eight hundred million, fifty-two thousand, seven hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 20000377 40000754 80001508 100001885 140002639 200003770 280005278 400007540 560010556 700013195 1400026390 2800052780