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83015072 = 257370603
BaseRepresentation
bin1001111001010…
…11010110100000
312210012121021022
410330223112200
5132222440242
612123145012
72025421310
oct474532640
9183177238
1083015072
11429504a8
1223975168
131427785a
14b04d440
15744c0d2
hex4f2b5a0

83015072 has 24 divisors (see below), whose sum is σ = 186784416. Its totient is φ = 35577792.

The previous prime is 83015059. The next prime is 83015147. The reversal of 83015072 is 27051038.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185078 + ... + 185525.

It is an arithmetic number, because the mean of its divisors is an integer number (7782684).

Almost surely, 283015072 is an apocalyptic number.

It is an amenable number.

83015072 is an abundant number, since it is smaller than the sum of its proper divisors (103769344).

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

83015072 is a wasteful number, since it uses less digits than its factorization.

83015072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370620 (or 370612 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 83015072 is about 9111.2607250589. The cubic root of 83015072 is about 436.2334692138.

The spelling of 83015072 in words is "eighty-three million, fifteen thousand, seventy-two".

Divisors: 1 2 4 7 8 14 16 28 32 56 112 224 370603 741206 1482412 2594221 2964824 5188442 5929648 10376884 11859296 20753768 41507536 83015072