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245073380 = 22512253669
BaseRepresentation
bin11101001101110…
…00010111100100
3122002011000110212
432212320113210
51000214322010
640152434552
76034042436
oct1646702744
9562130425
10245073380
11116379292
126a0a8a58
133ba09146
1424796656
15167ae505
hexe9b85e4

245073380 has 12 divisors (see below), whose sum is σ = 514654140. Its totient is φ = 98029344.

The previous prime is 245073341. The next prime is 245073391. The reversal of 245073380 is 83370542.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 132204004 + 112869376 = 11498^2 + 10624^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6126815 + ... + 6126854.

It is an arithmetic number, because the mean of its divisors is an integer number (42887845).

Almost surely, 2245073380 is an apocalyptic number.

245073380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245073380 is an abundant number, since it is smaller than the sum of its proper divisors (269580760).

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

245073380 is a wasteful number, since it uses less digits than its factorization.

245073380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12253678 (or 12253676 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 245073380 is about 15654.8197051260. The cubic root of 245073380 is about 625.7949394188.

The spelling of 245073380 in words is "two hundred forty-five million, seventy-three thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 12253669 24507338 49014676 61268345 122536690 245073380