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20880043254 = 2327234770607
BaseRepresentation
bin10011011100100011…
…000010110011110110
31222220011111002122100
4103130203002303312
5320230242341004
613331523442530
71336266303450
oct233443026366
958804432570
1020880043254
1189452705a4
124068826446
131c79b047a5
1410211292d0
15823154739
hex4dc8c2cf6

20880043254 has 48 divisors (see below), whose sum is σ = 51725726208. Its totient is φ = 5963100336.

The previous prime is 20880043253. The next prime is 20880043277. The reversal of 20880043254 is 45234008802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20880043253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 260419 + ... + 331025.

It is an arithmetic number, because the mean of its divisors is an integer number (1077619296).

Almost surely, 220880043254 is an apocalyptic number.

20880043254 is an abundant number, since it is smaller than the sum of its proper divisors (30845682954).

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

20880043254 is a wasteful number, since it uses less digits than its factorization.

20880043254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72969 (or 72966 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The spelling of 20880043254 in words is "twenty billion, eight hundred eighty million, forty-three thousand, two hundred fifty-four".

Divisors: 1 2 3 6 7 9 14 18 21 42 63 126 2347 4694 7041 14082 16429 21123 32858 42246 49287 70607 98574 141214 147861 211821 295722 423642 494249 635463 988498 1270926 1482747 2965494 4448241 8896482 165714629 331429258 497143887 994287774 1160002403 1491431661 2320004806 2982863322 3480007209 6960014418 10440021627 20880043254