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49538680 = 23517263277
BaseRepresentation
bin1011110011111…
…0011001111000
310110012211021221
42330332121320
5100140214210
64525441424
71141033432
oct274763170
9113184257
1049538680
1125a66164
1214710274
13a356439
146817652
1545381da
hex2f3e678

49538680 has 64 divisors (see below), whose sum is σ = 118895040. Its totient is φ = 18511872.

The previous prime is 49538669. The next prime is 49538683. The reversal of 49538680 is 8683594.

It is a super-2 number, since 2×495386802 = 4908161632284800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49538683) 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, 178702 + ... + 178978.

It is an arithmetic number, because the mean of its divisors is an integer number (1857735).

Almost surely, 249538680 is an apocalyptic number.

49538680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49538680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59447520).

49538680 is an abundant number, since it is smaller than the sum of its proper divisors (69356360).

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

49538680 is a wasteful number, since it uses less digits than its factorization.

49538680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 49538680 is about 7038.3719708467. The cubic root of 49538680 is about 367.2666357457.

The spelling of 49538680 in words is "forty-nine million, five hundred thirty-eight thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 17 20 34 40 68 85 136 170 263 277 340 526 554 680 1052 1108 1315 1385 2104 2216 2630 2770 4471 4709 5260 5540 8942 9418 10520 11080 17884 18836 22355 23545 35768 37672 44710 47090 72851 89420 94180 145702 178840 188360 291404 364255 582808 728510 1238467 1457020 2476934 2914040 4953868 6192335 9907736 12384670 24769340 49538680