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2637227140 = 225131861357
BaseRepresentation
bin1001110100110000…
…1110010010000100
320210210102000112021
42131030032102010
520400112232030
61113404532524
7122232026602
oct23514162204
96723360467
102637227140
111133711869
12617251144
133304a8642
141b0372872
151067d597a
hex9d30e484

2637227140 has 12 divisors (see below), whose sum is σ = 5538177036. Its totient is φ = 1054890848.

The previous prime is 2637227137. The next prime is 2637227147. The reversal of 2637227140 is 417227362.

It can be written as a sum of positive squares in 2 ways, for example, as 802475584 + 1834751556 = 28328^2 + 42834^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2637227096 and 2637227105.

It is not an unprimeable number, because it can be changed into a prime (2637227147) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 65930659 + ... + 65930698.

It is an arithmetic number, because the mean of its divisors is an integer number (461514753).

Almost surely, 22637227140 is an apocalyptic number.

2637227140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2637227140 is an abundant number, since it is smaller than the sum of its proper divisors (2900949896).

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

2637227140 is a wasteful number, since it uses less digits than its factorization.

2637227140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131861366 (or 131861364 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 2637227140 is about 51353.9398683295. The cubic root of 2637227140 is about 1381.6005967919.

The spelling of 2637227140 in words is "two billion, six hundred thirty-seven million, two hundred twenty-seven thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 131861357 263722714 527445428 659306785 1318613570 2637227140