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23728230 = 2325263647
BaseRepresentation
bin101101010000…
…1000001100110
31122122112000100
41122201001212
522033300410
62204324530
7405454341
oct132410146
948575010
1023728230
1112437409
127b43746
134bba396
143219458
15213a8c0
hex16a1066

23728230 has 24 divisors (see below), whose sum is σ = 61693632. Its totient is φ = 6327504.

The previous prime is 23728219. The next prime is 23728231. The reversal of 23728230 is 3282732.

It is a junction number, because it is equal to n+sod(n) for n = 23728194 and 23728203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23728231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131734 + ... + 131913.

It is an arithmetic number, because the mean of its divisors is an integer number (2570568).

Almost surely, 223728230 is an apocalyptic number.

23728230 is an abundant number, since it is smaller than the sum of its proper divisors (37965402).

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

23728230 is a wasteful number, since it uses less digits than its factorization.

23728230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263660 (or 263657 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 23728230 is about 4871.1631054605. The cubic root of 23728230 is about 287.3570000885.

The spelling of 23728230 in words is "twenty-three million, seven hundred twenty-eight thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 263647 527294 790941 1318235 1581882 2372823 2636470 3954705 4745646 7909410 11864115 23728230