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23028830 = 2511209353
BaseRepresentation
bin101011111011…
…0010001011110
31121022222121122
41113312101132
521343410310
62141330542
7366512306
oct127662136
947288548
1023028830
1111aa99a0
127866a52
134a03c36
1430b6606
15204d555
hex15f645e

23028830 has 16 divisors (see below), whose sum is σ = 45220464. Its totient is φ = 8374080.

The previous prime is 23028827. The next prime is 23028833. The reversal of 23028830 is 3882032.

It is an interprime number because it is at equal distance from previous prime (23028827) and next prime (23028833).

It is a super-2 number, since 2×230288302 = 1060654022337800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23028830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23028833) 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, 104567 + ... + 104786.

It is an arithmetic number, because the mean of its divisors is an integer number (2826279).

Almost surely, 223028830 is an apocalyptic number.

23028830 is a deficient number, since it is larger than the sum of its proper divisors (22191634).

23028830 is a wasteful number, since it uses less digits than its factorization.

23028830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209371.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 23028830 is about 4798.8363172753. The cubic root of 23028830 is about 284.5054725531.

The spelling of 23028830 in words is "twenty-three million, twenty-eight thousand, eight hundred thirty".

Divisors: 1 2 5 10 11 22 55 110 209353 418706 1046765 2093530 2302883 4605766 11514415 23028830