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72146982 = 23313371151
BaseRepresentation
bin1000100110011…
…10000000100110
312000202110001110
410103032000212
5121432200412
611054205450
71534145025
oct423160046
9160673043
1072146982
11377a8106
12201b3886
1311c40b2b
1498208bc
156501d3c
hex44ce026

72146982 has 32 divisors (see below), whose sum is σ = 149520384. Its totient is φ = 23184000.

The previous prime is 72146953. The next prime is 72146989. The reversal of 72146982 is 28964127.

It is a self number, because there is not a number n which added to its sum of digits gives 72146982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72146989) 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, 62107 + ... + 63257.

It is an arithmetic number, because the mean of its divisors is an integer number (4672512).

Almost surely, 272146982 is an apocalyptic number.

72146982 is an abundant number, since it is smaller than the sum of its proper divisors (77373402).

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

72146982 is a wasteful number, since it uses less digits than its factorization.

72146982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524.

The product of its digits is 48384, while the sum is 39.

The square root of 72146982 is about 8493.9379559778. The cubic root of 72146982 is about 416.2996600474.

It can be divided in two parts, 7214 and 6982, that added together give a triangular number (14196 = T168).

The spelling of 72146982 in words is "seventy-two million, one hundred forty-six thousand, nine hundred eighty-two".

Divisors: 1 2 3 6 31 62 93 186 337 674 1011 1151 2022 2302 3453 6906 10447 20894 31341 35681 62682 71362 107043 214086 387887 775774 1163661 2327322 12024497 24048994 36073491 72146982