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2020847920 = 2457132131163
BaseRepresentation
bin111100001110011…
…1011000100110000
312012211120201012021
41320130323010300
513114314113140
6532305441224
7101035631620
oct17034730460
95184521167
102020847920
11947796a53
12484940214
13262896700
14152564880
15bc62eb4a
hex7873b130

2020847920 has 240 divisors, whose sum is σ = 5894836992. Its totient is φ = 630789120.

The previous prime is 2020847891. The next prime is 2020847929. The reversal of 2020847920 is 297480202.

It is not an unprimeable number, because it can be changed into a prime (2020847929) 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, 12397759 + ... + 12397921.

Almost surely, 22020847920 is an apocalyptic number.

2020847920 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 2020847920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2947418496).

2020847920 is an abundant number, since it is smaller than the sum of its proper divisors (3873989072).

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

2020847920 is a wasteful number, since it uses less digits than its factorization.

2020847920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 2020847920 is about 44953.8421049859. The cubic root of 2020847920 is about 1264.2837149544.

The spelling of 2020847920 in words is "two billion, twenty million, eight hundred forty-seven thousand, nine hundred twenty".