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143268020 = 22571795717
BaseRepresentation
bin10001000101000…
…01100010110100
3100222120202202222
420202201202310
5243134034040
622114421512
73356521010
oct1042414264
9328522688
10143268020
1173964425
123bb91898
13238b299c
1415055540
15c89ebb5
hex88a18b4

143268020 has 48 divisors (see below), whose sum is σ = 345824640. Its totient is φ = 48837504.

The previous prime is 143268007. The next prime is 143268023. The reversal of 143268020 is 20862341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143268023) 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, 22202 + ... + 27918.

It is an arithmetic number, because the mean of its divisors is an integer number (7204680).

Almost surely, 2143268020 is an apocalyptic number.

143268020 is a gapful number since it is divisible by the number (10) 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 143268020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172912320).

143268020 is an abundant number, since it is smaller than the sum of its proper divisors (202556620).

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

143268020 is a wasteful number, since it uses less digits than its factorization.

143268020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5912 (or 5910 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 143268020 is about 11969.4619762126. The cubic root of 143268020 is about 523.2586538828.

The spelling of 143268020 in words is "one hundred forty-three million, two hundred sixty-eight thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 179 358 716 895 1253 1790 2506 3580 5012 5717 6265 11434 12530 22868 25060 28585 40019 57170 80038 114340 160076 200095 400190 800380 1023343 2046686 4093372 5116715 7163401 10233430 14326802 20466860 28653604 35817005 71634010 143268020