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82972841 = 746325601
BaseRepresentation
bin1001111001000…
…01000010101001
312210010110100012
410330201002221
5132220112331
612122221305
72025154220
oct474410251
9183113305
1082972841
11429217a6
1223954835
1314261573
14b03bcb7
15743e82b
hex4f210a9

82972841 has 8 divisors (see below), whose sum is σ = 95034624. Its totient is φ = 70963200.

The previous prime is 82972751. The next prime is 82972847. The reversal of 82972841 is 14827928.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82972841 - 226 = 15863977 is a prime.

It is a super-2 number, since 2×829728412 = 13768984687222562, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82972847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9560 + ... + 16041.

It is an arithmetic number, because the mean of its divisors is an integer number (11879328).

Almost surely, 282972841 is an apocalyptic number.

It is an amenable number.

82972841 is a deficient number, since it is larger than the sum of its proper divisors (12061783).

82972841 is a wasteful number, since it uses less digits than its factorization.

82972841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26071.

The product of its digits is 64512, while the sum is 41.

The square root of 82972841 is about 9108.9429134230. The cubic root of 82972841 is about 436.1594838517.

The spelling of 82972841 in words is "eighty-two million, nine hundred seventy-two thousand, eight hundred forty-one".

Divisors: 1 7 463 3241 25601 179207 11853263 82972841