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245838680 = 23531198257
BaseRepresentation
bin11101010011100…
…11001101011000
3122010120220021022
432221303031120
51000413314210
640221102012
76043410563
oct1651631530
9563526238
10245838680
1111685126a
126a3b7908
133bc16599
14249154da
15168b1155
hexea73358

245838680 has 32 divisors (see below), whose sum is σ = 570983040. Its totient is φ = 95162880.

The previous prime is 245838673. The next prime is 245838763. The reversal of 245838680 is 86838542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97889 + ... + 100368.

It is an arithmetic number, because the mean of its divisors is an integer number (17843220).

Almost surely, 2245838680 is an apocalyptic number.

245838680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245838680 is an abundant number, since it is smaller than the sum of its proper divisors (325144360).

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

245838680 is a wasteful number, since it uses less digits than its factorization.

245838680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198299 (or 198295 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 245838680 is about 15679.2436042049. The cubic root of 245838680 is about 626.4456604605.

The spelling of 245838680 in words is "two hundred forty-five million, eight hundred thirty-eight thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 31 40 62 124 155 248 310 620 1240 198257 396514 793028 991285 1586056 1982570 3965140 6145967 7930280 12291934 24583868 30729835 49167736 61459670 122919340 245838680