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680370372 = 2232111718107
BaseRepresentation
bin101000100011011…
…010000011000100
31202102020101200200
4220203122003010
52343133322442
6151302410500
722601024043
oct5043320304
91672211620
10680370372
1131a062370
1216ba30a30
13aac58726
146650855a
153eae634c
hex288da0c4

680370372 has 36 divisors (see below), whose sum is σ = 1876173936. Its totient is φ = 206172720.

The previous prime is 680370371. The next prime is 680370403. The reversal of 680370372 is 273073086.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (680370371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 858658 + ... + 859449.

Almost surely, 2680370372 is an apocalyptic number.

It is an amenable number.

680370372 is an abundant number, since it is smaller than the sum of its proper divisors (1195803564).

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

680370372 is a wasteful number, since it uses less digits than its factorization.

680370372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718128 (or 1718123 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 680370372 is about 26083.9102130030. The cubic root of 680370372 is about 879.5255586506.

The spelling of 680370372 in words is "six hundred eighty million, three hundred seventy thousand, three hundred seventy-two".

Divisors: 1 2 3 4 6 9 11 12 18 22 33 36 44 66 99 132 198 396 1718107 3436214 5154321 6872428 10308642 15462963 18899177 20617284 30925926 37798354 56697531 61851852 75596708 113395062 170092593 226790124 340185186 680370372