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82370268 = 223223531877
BaseRepresentation
bin1001110100011…
…01111011011100
312201222211202200
410322031323130
5132041322033
612101251500
72020064361
oct472157334
9181884680
1082370268
1142550002
1223703b90
13140b0206
14ad22468
157371013
hex4e8dedc

82370268 has 72 divisors (see below), whose sum is σ = 221483808. Its totient is φ = 25753728.

The previous prime is 82370261. The next prime is 82370293. The reversal of 82370268 is 86207328.

It is a happy number.

It is a super-2 number, since 2×823702682 = 13569722100783648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82370261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42946 + ... + 44822.

It is an arithmetic number, because the mean of its divisors is an integer number (3076164).

Almost surely, 282370268 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 82370268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110741904).

82370268 is an abundant number, since it is smaller than the sum of its proper divisors (139113540).

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

82370268 is a wasteful number, since it uses less digits than its factorization.

82370268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963 (or 1958 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 82370268 is about 9075.8067410010. The cubic root of 82370268 is about 435.1010783741.

The spelling of 82370268 in words is "eighty-two million, three hundred seventy thousand, two hundred sixty-eight".

Divisors: 1 2 3 4 6 9 12 18 23 36 46 53 69 92 106 138 159 207 212 276 318 414 477 636 828 954 1219 1877 1908 2438 3657 3754 4876 5631 7314 7508 10971 11262 14628 16893 21942 22524 33786 43171 43884 67572 86342 99481 129513 172684 198962 259026 298443 388539 397924 518052 596886 777078 895329 1193772 1554156 1790658 2288063 3581316 4576126 6864189 9152252 13728378 20592567 27456756 41185134 82370268