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2020880440 = 235172971883
BaseRepresentation
bin111100001110100…
…0011000000111000
312012211122100210201
41320131003000320
513114321133230
6532310251544
7101036125465
oct17035030070
95184570721
102020880440
11947809427
12484956bb4
132628a8457
1415257266c
15bc6395ca
hex78743038

2020880440 has 32 divisors (see below), whose sum is σ = 4814452080. Its totient is φ = 760801792.

The previous prime is 2020880437. The next prime is 2020880453. The reversal of 2020880440 is 440880202.

It is a junction number, because it is equal to n+sod(n) for n = 2020880399 and 2020880408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1485262 + ... + 1486621.

Almost surely, 22020880440 is an apocalyptic number.

2020880440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020880440 is an abundant number, since it is smaller than the sum of its proper divisors (2793571640).

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

2020880440 is a wasteful number, since it uses less digits than its factorization.

2020880440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971911 (or 2971907 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 2020880440 is about 44954.2038078754. The cubic root of 2020880440 is about 1264.2904966433.

The spelling of 2020880440 in words is "two billion, twenty million, eight hundred eighty thousand, four hundred forty".

Divisors: 1 2 4 5 8 10 17 20 34 40 68 85 136 170 340 680 2971883 5943766 11887532 14859415 23775064 29718830 50522011 59437660 101044022 118875320 202088044 252610055 404176088 505220110 1010440220 2020880440