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83649652 = 221091731109
BaseRepresentation
bin1001111110001…
…10010001110100
312211101211202021
410333012101310
5132403242102
612144522524
72034003352
oct477062164
9184354667
1083649652
1143244249
1224020444
131443a648
14b1767d2
157525137
hex4fc6474

83649652 has 24 divisors (see below), whose sum is σ = 148717800. Its totient is φ = 41164416.

The previous prime is 83649649. The next prime is 83649667. The reversal of 83649652 is 25694638.

It can be written as a sum of positive squares in 4 ways, for example, as 12988816 + 70660836 = 3604^2 + 8406^2 .

It is a super-2 number, since 2×836496522 = 13994528559442208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 83649599 and 83649608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74874 + ... + 75982.

It is an arithmetic number, because the mean of its divisors is an integer number (6196575).

Almost surely, 283649652 is an apocalyptic number.

It is an amenable number.

83649652 is a deficient number, since it is larger than the sum of its proper divisors (65068148).

83649652 is a wasteful number, since it uses less digits than its factorization.

83649652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395 (or 1393 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The square root of 83649652 is about 9146.0183686673. The cubic root of 83649652 is about 437.3421941885.

The spelling of 83649652 in words is "eighty-three million, six hundred forty-nine thousand, six hundred fifty-two".

Divisors: 1 2 4 109 173 218 346 436 692 1109 2218 4436 18857 37714 75428 120881 191857 241762 383714 483524 767428 20912413 41824826 83649652