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199999538 = 23119116889
BaseRepresentation
bin10111110101111…
…00000000110010
3111221100000210022
423322330000302
5402144441123
631502403442
74645653014
oct1372740062
9457300708
10199999538
11a2992682
1256b90582
133258702b
141c7c21b4
15128591c8
hexbebc032

199999538 has 16 divisors (see below), whose sum is σ = 311316480. Its totient is φ = 96261600.

The previous prime is 199999483. The next prime is 199999589. The reversal of 199999538 is 835999991.

199999538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×1999995384 (a number of 34 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (62).

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, 3398 + ... + 20286.

It is an arithmetic number, because the mean of its divisors is an integer number (19457280).

Almost surely, 2199999538 is an apocalyptic number.

199999538 is a deficient number, since it is larger than the sum of its proper divisors (111316942).

199999538 is a wasteful number, since it uses less digits than its factorization.

199999538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17113.

The product of its digits is 7085880, while the sum is 62.

The square root of 199999538 is about 14142.1192895549. The cubic root of 199999538 is about 584.8030973435.

The spelling of 199999538 in words is "one hundred ninety-nine million, nine hundred ninety-nine thousand, five hundred thirty-eight".

Divisors: 1 2 31 62 191 382 5921 11842 16889 33778 523559 1047118 3225799 6451598 99999769 199999538