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23034820 = 2256179239
BaseRepresentation
bin101011111011…
…1101111000100
31121100021211111
41113313233010
521344103240
62141414404
7366535624
oct127675704
947307744
1023034820
1112003446
12786a404
134a06893
1430b8884
1520501ea
hex15f7bc4

23034820 has 48 divisors (see below), whose sum is σ = 49996800. Its totient is φ = 8910720.

The previous prime is 23034773. The next prime is 23034857. The reversal of 23034820 is 2843032.

It is a junction number, because it is equal to n+sod(n) for n = 23034791 and 23034800.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96261 + ... + 96499.

It is an arithmetic number, because the mean of its divisors is an integer number (1041600).

Almost surely, 223034820 is an apocalyptic number.

23034820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23034820 is an abundant number, since it is smaller than the sum of its proper divisors (26961980).

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

23034820 is a wasteful number, since it uses less digits than its factorization.

23034820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 23034820 is about 4799.4603863351. The cubic root of 23034820 is about 284.5301378681.

Adding to 23034820 its reverse (2843032), we get a palindrome (25877852).

The spelling of 23034820 in words is "twenty-three million, thirty-four thousand, eight hundred twenty".

Divisors: 1 2 4 5 10 20 61 79 122 158 239 244 305 316 395 478 610 790 956 1195 1220 1580 2390 4780 4819 9638 14579 18881 19276 24095 29158 37762 48190 58316 72895 75524 94405 96380 145790 188810 291580 377620 1151741 2303482 4606964 5758705 11517410 23034820