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199880252 = 2211132231567
BaseRepresentation
bin10111110100111…
…10111000111100
3111221002222011022
423322132320330
5402132132002
631500043312
74644645155
oct1372367074
9457088138
10199880252
11a2910aa0
1256b33538
1332544950
141c79092c
1512833ba2
hexbe9ee3c

199880252 has 48 divisors (see below), whose sum is σ = 413048832. Its totient is φ = 83436480.

The previous prime is 199880251. The next prime is 199880269. The reversal of 199880252 is 252088991.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199880251) 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, 126773 + ... + 128339.

It is an arithmetic number, because the mean of its divisors is an integer number (8605184).

Almost surely, 2199880252 is an apocalyptic number.

It is an amenable number.

199880252 is an abundant number, since it is smaller than the sum of its proper divisors (213168580).

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

199880252 is a wasteful number, since it uses less digits than its factorization.

199880252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818 (or 1816 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 199880252 is about 14137.9012586734. The cubic root of 199880252 is about 584.6868092488.

The spelling of 199880252 in words is "one hundred ninety-nine million, eight hundred eighty thousand, two hundred fifty-two".

Divisors: 1 2 4 11 13 22 26 44 52 143 223 286 446 572 892 1567 2453 2899 3134 4906 5798 6268 9812 11596 17237 20371 31889 34474 40742 63778 68948 81484 127556 224081 349441 448162 698882 896324 1397764 3843851 4542733 7687702 9085466 15375404 18170932 49970063 99940126 199880252