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23997078 = 2327227839
BaseRepresentation
bin101101110001…
…0101010010110
31200011011210200
41123202222112
522120401303
62214201330
7410654220
oct133425226
950134720
1023997078
11126003a6
128053246
134c82871
143289410
1521903a3
hex16e2a96

23997078 has 48 divisors (see below), whose sum is σ = 59754240. Its totient is φ = 6817968.

The previous prime is 23997067. The next prime is 23997079. The reversal of 23997078 is 87079932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23997079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28183 + ... + 29021.

It is an arithmetic number, because the mean of its divisors is an integer number (1244880).

Almost surely, 223997078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23997078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29877120).

23997078 is an abundant number, since it is smaller than the sum of its proper divisors (35757162).

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

23997078 is a wasteful number, since it uses less digits than its factorization.

23997078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 23997078 is about 4898.6812511124. The cubic root of 23997078 is about 288.4382073274.

The spelling of 23997078 in words is "twenty-three million, nine hundred ninety-seven thousand, seventy-eight".

Divisors: 1 2 3 6 7 9 14 18 21 42 63 126 227 454 681 839 1362 1589 1678 2043 2517 3178 4086 4767 5034 5873 7551 9534 11746 14301 15102 17619 28602 35238 52857 105714 190453 380906 571359 1142718 1333171 1714077 2666342 3428154 3999513 7999026 11998539 23997078