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83488521 = 3132121067
BaseRepresentation
bin1001111100111…
…10111100001001
312211002122201110
410332132330021
5132333113041
612141240533
72032432524
oct476367411
9184078643
1083488521
1143144186
1223b63149
13143b21bc
14b133bbb
1574e2516
hex4f9ef09

83488521 has 8 divisors (see below), whose sum is σ = 111407584. Its totient is φ = 55614240.

The previous prime is 83488501. The next prime is 83488523. The reversal of 83488521 is 12588438.

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

It is not a de Polignac number, because 83488521 - 210 = 83487497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83488521.

It is not an unprimeable number, because it can be changed into a prime (83488523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6571 + ... + 14496.

It is an arithmetic number, because the mean of its divisors is an integer number (13925948).

Almost surely, 283488521 is an apocalyptic number.

It is an amenable number.

83488521 is a deficient number, since it is larger than the sum of its proper divisors (27919063).

83488521 is a wasteful number, since it uses less digits than its factorization.

83488521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22391.

The product of its digits is 61440, while the sum is 39.

The square root of 83488521 is about 9137.2053167257. The cubic root of 83488521 is about 437.0612020610.

The spelling of 83488521 in words is "eighty-three million, four hundred eighty-eight thousand, five hundred twenty-one".

Divisors: 1 3 1321 3963 21067 63201 27829507 83488521