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280196142 = 23172747021
BaseRepresentation
bin10000101100110…
…111010000101110
3201112020102211220
4100230313100232
51033212234032
643445324210
76641425242
oct2054672056
9645212756
10280196142
11134188566
1279a06666
1346085a45
14292da422
15198eb12c
hex10b3742e

280196142 has 16 divisors (see below), whose sum is σ = 593356752. Its totient is φ = 87904640.

The previous prime is 280196141. The next prime is 280196149. The reversal of 280196142 is 241691082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280196141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1373409 + ... + 1373612.

It is an arithmetic number, because the mean of its divisors is an integer number (37084797).

Almost surely, 2280196142 is an apocalyptic number.

280196142 is an abundant number, since it is smaller than the sum of its proper divisors (313160610).

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

280196142 is a wasteful number, since it uses less digits than its factorization.

280196142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2747043.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 280196142 is about 16739.0603678940. The cubic root of 280196142 is about 654.3659867360.

The spelling of 280196142 in words is "two hundred eighty million, one hundred ninety-six thousand, one hundred forty-two".

Divisors: 1 2 3 6 17 34 51 102 2747021 5494042 8241063 16482126 46699357 93398714 140098071 280196142