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23941988 = 22722347113
BaseRepresentation
bin101101101010…
…1001101100100
31200001101020022
41123111031210
522112120423
62213054312
7410334500
oct133251544
950041208
1023941988
1112572a74
128027398
134c63775
143273300
15217ddc8
hex16d5364

23941988 has 72 divisors (see below), whose sum is σ = 52399872. Its totient is φ = 9520896.

The previous prime is 23941987. The next prime is 23942003. The reversal of 23941988 is 88914932.

It is a happy number.

Its product of digits (124416) is a multiple of the sum of its prime divisors (192).

It is not an unprimeable number, because it can be changed into a prime (23941987) 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, 211820 + ... + 211932.

It is an arithmetic number, because the mean of its divisors is an integer number (727776).

Almost surely, 223941988 is an apocalyptic number.

23941988 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 23941988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26199936).

23941988 is an abundant number, since it is smaller than the sum of its proper divisors (28457884).

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

23941988 is a wasteful number, since it uses less digits than its factorization.

23941988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 192 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 23941988 is about 4893.0550783738. The cubic root of 23941988 is about 288.2173160455.

The spelling of 23941988 in words is "twenty-three million, nine hundred forty-one thousand, nine hundred eighty-eight".

Divisors: 1 2 4 7 14 23 28 46 47 49 92 94 98 113 161 188 196 226 322 329 452 644 658 791 1081 1127 1316 1582 2162 2254 2303 2599 3164 4324 4508 4606 5198 5311 5537 7567 9212 10396 10622 11074 15134 18193 21244 22148 30268 36386 37177 52969 72772 74354 105938 122153 127351 148708 211876 244306 254702 260239 488612 509404 520478 855071 1040956 1710142 3420284 5985497 11970994 23941988