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49999860 = 223252291213
BaseRepresentation
bin1011111010111…
…0111111110100
310111002020220200
42332232333310
5100244443420
64543400500
71144664121
oct276567764
9114066820
1049999860
11262506a9
12148b3130
13a488321
1468d7748
1545c9b90
hex2faeff4

49999860 has 72 divisors (see below), whose sum is σ = 152454120. Its totient is φ = 13264128.

The previous prime is 49999853. The next prime is 49999877. The reversal of 49999860 is 6899994.

It is a happy number.

49999860 is a `hidden beast` number, since 499 + 9 + 98 + 60 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4112784 + 45887076 = 2028^2 + 6774^2 .

It is a junction number, because it is equal to n+sod(n) for n = 49999797 and 49999806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40614 + ... + 41826.

Almost surely, 249999860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49999860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76227060).

49999860 is an abundant number, since it is smaller than the sum of its proper divisors (102454260).

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

49999860 is a wasteful number, since it uses less digits than its factorization.

49999860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457 (or 1452 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The square root of 49999860 is about 7071.0579123636. The cubic root of 49999860 is about 368.4028060208.

The spelling of 49999860 in words is "forty-nine million, nine hundred ninety-nine thousand, eight hundred sixty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 229 458 687 916 1145 1213 1374 2061 2290 2426 2748 3435 3639 4122 4580 4852 6065 6870 7278 8244 10305 10917 12130 13740 14556 18195 20610 21834 24260 36390 41220 43668 54585 72780 109170 218340 277777 555554 833331 1111108 1388885 1666662 2499993 2777770 3333324 4166655 4999986 5555540 8333310 9999972 12499965 16666620 24999930 49999860