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23426830 = 257432181
BaseRepresentation
bin101100101011…
…1011100001110
31122002012120101
41121113130032
521444124310
62154041314
7403060540
oct131273416
948065511
1023426830
1112250a19
127a1923a
134b1313b
14317b690
1520cb43a
hex165770e

23426830 has 48 divisors (see below), whose sum is σ = 49611744. Its totient is φ = 7801920.

The previous prime is 23426827. The next prime is 23426839. The reversal of 23426830 is 3862432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23426839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129340 + ... + 129520.

It is an arithmetic number, because the mean of its divisors is an integer number (1033578).

Almost surely, 223426830 is an apocalyptic number.

23426830 is an abundant number, since it is smaller than the sum of its proper divisors (26184914).

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

23426830 is a wasteful number, since it uses less digits than its factorization.

23426830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 23426830 is about 4840.1270644478. The cubic root of 23426830 is about 286.1351261319.

The spelling of 23426830 in words is "twenty-three million, four hundred twenty-six thousand, eight hundred thirty".

Divisors: 1 2 5 7 10 14 35 43 70 86 181 215 301 362 430 602 905 1267 1505 1810 1849 2534 3010 3698 6335 7783 9245 12670 12943 15566 18490 25886 38915 54481 64715 77830 108962 129430 272405 334669 544810 669338 1673345 2342683 3346690 4685366 11713415 23426830