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20239032 = 23311312473
BaseRepresentation
bin100110100110…
…1001010111000
31102002020201210
41031031022320
520140122112
62001443120
7334012632
oct115151270
942066653
1020239032
1110473980
1269404a0
134268178
14298ba52
151b9bb3c
hex134d2b8

20239032 has 64 divisors (see below), whose sum is σ = 57000960. Its totient is φ = 5932800.

The previous prime is 20239019. The next prime is 20239033. The reversal of 20239032 is 23093202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20239033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6948 + ... + 9420.

It is an arithmetic number, because the mean of its divisors is an integer number (890640).

Almost surely, 220239032 is an apocalyptic number.

20239032 is a gapful number since it is divisible by the number (22) 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 20239032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28500480).

20239032 is an abundant number, since it is smaller than the sum of its proper divisors (36761928).

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

20239032 is a wasteful number, since it uses less digits than its factorization.

20239032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2524 (or 2520 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 20239032 is about 4498.7811682721. The cubic root of 20239032 is about 272.5188697199.

The spelling of 20239032 in words is "twenty million, two hundred thirty-nine thousand, thirty-two".

Divisors: 1 2 3 4 6 8 11 12 22 24 31 33 44 62 66 88 93 124 132 186 248 264 341 372 682 744 1023 1364 2046 2473 2728 4092 4946 7419 8184 9892 14838 19784 27203 29676 54406 59352 76663 81609 108812 153326 163218 217624 229989 306652 326436 459978 613304 652872 843293 919956 1686586 1839912 2529879 3373172 5059758 6746344 10119516 20239032