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23107028 = 2272313803
BaseRepresentation
bin101100000100…
…1010111010100
31121110221212212
41120021113110
521403411103
62143132552
7400256300
oct130112724
947427785
1023107028
111205271a
1278a4158
134a306c9
1430d6d00
1520667d8
hex16095d4

23107028 has 36 divisors (see below), whose sum is σ = 48569472. Its totient is φ = 9581040.

The previous prime is 23107013. The next prime is 23107057. The reversal of 23107028 is 82070132.

It is a junction number, because it is equal to n+sod(n) for n = 23106994 and 23107012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4175 + ... + 7977.

It is an arithmetic number, because the mean of its divisors is an integer number (1349152).

Almost surely, 223107028 is an apocalyptic number.

23107028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23107028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24284736).

23107028 is an abundant number, since it is smaller than the sum of its proper divisors (25462444).

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

23107028 is a wasteful number, since it uses less digits than its factorization.

23107028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3852 (or 3843 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 23107028 is about 4806.9770126349. The cubic root of 23107028 is about 284.8271363751.

The spelling of 23107028 in words is "twenty-three million, one hundred seven thousand, twenty-eight".

Divisors: 1 2 4 7 14 28 31 49 62 98 124 196 217 434 868 1519 3038 3803 6076 7606 15212 26621 53242 106484 117893 186347 235786 372694 471572 745388 825251 1650502 3301004 5776757 11553514 23107028