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2040230440 = 23571718391
BaseRepresentation
bin111100110011011…
…0111001000101000
312021012001110000101
41321212313020220
513134244333230
6534241115144
7101362446463
oct17146671050
95235043011
102040230440
11957725366
1248b328ab4
132668c1a61
14154d6c2da
15be1acaca
hex799b7228

2040230440 has 32 divisors (see below), whose sum is σ = 4655180160. Its totient is φ = 804596800.

The previous prime is 2040230429. The next prime is 2040230447. The reversal of 2040230440 is 440320402.

It is not an unprimeable number, because it can be changed into a prime (2040230447) 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, 356356 + ... + 362035.

It is an arithmetic number, because the mean of its divisors is an integer number (145474380).

Almost surely, 22040230440 is an apocalyptic number.

2040230440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2040230440 is an abundant number, since it is smaller than the sum of its proper divisors (2614949720).

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

2040230440 is a wasteful number, since it uses less digits than its factorization.

2040230440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718473 (or 718469 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 2040230440 is about 45168.9101041856. The cubic root of 2040230440 is about 1268.3128940207.

Adding to 2040230440 its reverse (440320402), we get a palindrome (2480550842).

The spelling of 2040230440 in words is "two billion, forty million, two hundred thirty thousand, four hundred forty".

Divisors: 1 2 4 5 8 10 20 40 71 142 284 355 568 710 1420 2840 718391 1436782 2873564 3591955 5747128 7183910 14367820 28735640 51005761 102011522 204023044 255028805 408046088 510057610 1020115220 2040230440