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20432243312 = 2413273103511
BaseRepresentation
bin10011000001110110…
…110100101001110000
31221201221212111121022
4103001312310221300
5313321123241222
613215245515012
71322221126325
oct230166645160
957657774538
1020432243312
1187355178a8
123b62872a68
131c080c8300
14dbb880b4c
157e8b9d042
hex4c1db4a70

20432243312 has 60 divisors (see below), whose sum is σ = 43454544624. Its totient is φ = 9300994560.

The previous prime is 20432243311. The next prime is 20432243317. The reversal of 20432243312 is 21334223402.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20432243311) 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, 145637 + ... + 249147.

Almost surely, 220432243312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20432243312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21727272312).

20432243312 is an abundant number, since it is smaller than the sum of its proper divisors (23022301312).

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

20432243312 is a wasteful number, since it uses less digits than its factorization.

20432243312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103618 (or 103599 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 20432243312 its reverse (21334223402), we get a palindrome (41766466714).

The spelling of 20432243312 in words is "twenty billion, four hundred thirty-two million, two hundred forty-three thousand, three hundred twelve".

Divisors: 1 2 4 8 13 16 26 52 73 104 146 169 208 292 338 584 676 949 1168 1352 1898 2704 3796 7592 12337 15184 24674 49348 98696 103511 197392 207022 414044 828088 1345643 1656176 2691286 5382572 7556303 10765144 15112606 17493359 21530288 30225212 34986718 60450424 69973436 98231939 120900848 139946872 196463878 279893744 392927756 785855512 1277015207 1571711024 2554030414 5108060828 10216121656 20432243312