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23778204252 = 22311180137911
BaseRepresentation
bin10110001001010010…
…101001101001011100
32021101010212221010120
4112021102221221130
5342144210014002
614531253234540
71501150254435
oct261122515134
967333787116
1023778204252
11a0a21a3880
124737332a50
13231c38045a
141217dc248c
159427cdcbc
hex5894a9a5c

23778204252 has 24 divisors (see below), whose sum is σ = 60526338432. Its totient is φ = 7205516400.

The previous prime is 23778204251. The next prime is 23778204259. The reversal of 23778204252 is 25240287732.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23778204251) 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, 90068824 + ... + 90069087.

It is an arithmetic number, because the mean of its divisors is an integer number (2521930768).

Almost surely, 223778204252 is an apocalyptic number.

23778204252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23778204252 is an abundant number, since it is smaller than the sum of its proper divisors (36748134180).

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

23778204252 is a wasteful number, since it uses less digits than its factorization.

23778204252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180137929 (or 180137927 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 42.

The spelling of 23778204252 in words is "twenty-three billion, seven hundred seventy-eight million, two hundred four thousand, two hundred fifty-two".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 132 180137911 360275822 540413733 720551644 1080827466 1981517021 2161654932 3963034042 5944551063 7926068084 11889102126 23778204252