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142679448 = 2333679859
BaseRepresentation
bin10001000000100…
…01110110011000
3100221110212102000
420200101312120
5243011220243
622054041000
73351520032
oct1040216630
9327425360
10142679448
11735a21aa
123b949160
1323737b12
1414d40c52
15c7d55d3
hex8811d98

142679448 has 64 divisors (see below), whose sum is σ = 402288000. Its totient is φ = 46845216.

The previous prime is 142679443. The next prime is 142679479. The reversal of 142679448 is 844976241.

142679448 is a `hidden beast` number, since 142 + 67 + 9 + 448 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142679443) 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, 9543 + ... + 19401.

It is an arithmetic number, because the mean of its divisors is an integer number (6285750).

Almost surely, 2142679448 is an apocalyptic number.

142679448 is a gapful number since it is divisible by the number (18) 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 142679448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201144000).

142679448 is an abundant number, since it is smaller than the sum of its proper divisors (259608552).

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

142679448 is a wasteful number, since it uses less digits than its factorization.

142679448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9941 (or 9931 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 142679448 is about 11944.8502711420. The cubic root of 142679448 is about 522.5411220430.

The spelling of 142679448 in words is "one hundred forty-two million, six hundred seventy-nine thousand, four hundred forty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 67 72 108 134 201 216 268 402 536 603 804 1206 1608 1809 2412 3618 4824 7236 9859 14472 19718 29577 39436 59154 78872 88731 118308 177462 236616 266193 354924 532386 660553 709848 1064772 1321106 1981659 2129544 2642212 3963318 5284424 5944977 7926636 11889954 15853272 17834931 23779908 35669862 47559816 71339724 142679448