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49138090 = 2541119849
BaseRepresentation
bin1011101101110…
…0100110101010
310102110110210021
42323130212222
5100034404330
64513111054
71134444511
oct273344652
9112413707
1049138090
11258121a1
121455848a
13a245cc1
146751678
1544a967a
hex2edc9aa

49138090 has 16 divisors (see below), whose sum is σ = 90606600. Its totient is φ = 19175680.

The previous prime is 49138087. The next prime is 49138127. The reversal of 49138090 is 9083194.

49138090 = 3842 + 3852 + ... + 5882.

It can be written as a sum of positive squares in 4 ways, for example, as 22212369 + 26925721 = 4713^2 + 5189^2 .

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, 59515 + ... + 60334.

Almost surely, 249138090 is an apocalyptic number.

49138090 is a deficient number, since it is larger than the sum of its proper divisors (41468510).

49138090 is a wasteful number, since it uses less digits than its factorization.

49138090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119897.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 49138090 is about 7009.8566319148. The cubic root of 49138090 is about 366.2739992893.

The spelling of 49138090 in words is "forty-nine million, one hundred thirty-eight thousand, ninety".

Divisors: 1 2 5 10 41 82 205 410 119849 239698 599245 1198490 4913809 9827618 24569045 49138090