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2890680040 = 23585012
BaseRepresentation
bin1010110001001100…
…0100011011101000
321110110022202112201
42230103010123220
521410003230130
61154501145544
7131430242413
oct25423043350
97413282481
102890680040
111253793776
126880bb2b4
13370b59881
141d5caab7a
1511db9cbca
hexac4c46e8

2890680040 has 24 divisors (see below), whose sum is σ = 6504795270. Its totient is φ = 1156136000.

The previous prime is 2890679993. The next prime is 2890680047. The reversal of 2890680040 is 400860982.

It can be written as a sum of positive squares in 3 ways, for example, as 960132196 + 1930547844 = 30986^2 + 43938^2 .

It is not an unprimeable number, because it can be changed into a prime (2890680047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 335790 + ... + 344290.

Almost surely, 22890680040 is an apocalyptic number.

2890680040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2890680040 is an abundant number, since it is smaller than the sum of its proper divisors (3614115230).

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

2890680040 is an frugal number, since it uses more digits than its factorization.

2890680040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17013 (or 8508 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 2890680040 is about 53765.0447781828. The cubic root of 2890680040 is about 1424.5138450367.

The spelling of 2890680040 in words is "two billion, eight hundred ninety million, six hundred eighty thousand, forty".

Divisors: 1 2 4 5 8 10 20 40 8501 17002 34004 42505 68008 85010 170020 340040 72267001 144534002 289068004 361335005 578136008 722670010 1445340020 2890680040