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142623628 = 22711345077
BaseRepresentation
bin10001000000001…
…00001110001100
3100221101000211121
420200010032030
5243002424003
622052530324
73351165220
oct1040041614
9327330747
10142623628
1173564274
123b9209a4
13237185a4
1414d28780
15c7c3cbd
hex880438c

142623628 has 24 divisors (see below), whose sum is σ = 287777952. Its totient is φ = 60582144.

The previous prime is 142623623. The next prime is 142623661. The reversal of 142623628 is 826326241.

It is a junction number, because it is equal to n+sod(n) for n = 142623593 and 142623602.

It is not an unprimeable number, because it can be changed into a prime (142623623) 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, 19375 + ... + 25702.

It is an arithmetic number, because the mean of its divisors is an integer number (11990748).

Almost surely, 2142623628 is an apocalyptic number.

It is an amenable number.

142623628 is an abundant number, since it is smaller than the sum of its proper divisors (145154324).

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

142623628 is a wasteful number, since it uses less digits than its factorization.

142623628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45201 (or 45199 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 142623628 is about 11942.5134707900. The cubic root of 142623628 is about 522.4729691533.

Adding to 142623628 its reverse (826326241), we get a palindrome (968949869).

The spelling of 142623628 in words is "one hundred forty-two million, six hundred twenty-three thousand, six hundred twenty-eight".

Divisors: 1 2 4 7 14 28 113 226 452 791 1582 3164 45077 90154 180308 315539 631078 1262156 5093701 10187402 20374804 35655907 71311814 142623628