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23068820 = 2251153441
BaseRepresentation
bin101100000000…
…0000010010100
31121102000110202
41120000002110
521401200240
62142240032
7400040015
oct130000224
947360422
1023068820
1112026a45
127886018
134a191b8
1430c700c
15205a315
hex1600094

23068820 has 12 divisors (see below), whose sum is σ = 48444564. Its totient is φ = 9227520.

The previous prime is 23068819. The next prime is 23068849. The reversal of 23068820 is 2886032.

It can be written as a sum of positive squares in 2 ways, for example, as 17007376 + 6061444 = 4124^2 + 2462^2 .

It is a super-3 number, since 3×230688203 (a number of 23 digits) contains 333 as substring.

It is a congruent number.

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, 576701 + ... + 576740.

It is an arithmetic number, because the mean of its divisors is an integer number (4037047).

Almost surely, 223068820 is an apocalyptic number.

23068820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23068820 is an abundant number, since it is smaller than the sum of its proper divisors (25375744).

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

23068820 is a wasteful number, since it uses less digits than its factorization.

23068820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153450 (or 1153448 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 23068820 is about 4803.0011451175. The cubic root of 23068820 is about 284.6700603693.

The spelling of 23068820 in words is "twenty-three million, sixty-eight thousand, eight hundred twenty".

Divisors: 1 2 4 5 10 20 1153441 2306882 4613764 5767205 11534410 23068820