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50040 = 23325139
BaseRepresentation
bin1100001101111000
32112122100
430031320
53100130
61023400
7265614
oct141570
975570
1050040
1134661
1224b60
1319a13
1414344
15ec60
hexc378

50040 has 48 divisors (see below), whose sum is σ = 163800. Its totient is φ = 13248.

The previous prime is 50033. The next prime is 50047. The reversal of 50040 is 4005.

50040 = T95 + T96 + ... + T104.

50040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (50033) and next prime (50047).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 291 + ... + 429.

250040 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 50040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81900).

50040 is an abundant number, since it is smaller than the sum of its proper divisors (113760).

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

50040 is a wasteful number, since it uses less digits than its factorization.

50040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 9.

The square root of 50040 is about 223.6962225877. The cubic root of 50040 is about 36.8501364518.

Adding to 50040 its reverse (4005), we get a palindrome (54045).

The spelling of 50040 in words is "fifty thousand, forty", and thus it is an eban number.

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 139 180 278 360 417 556 695 834 1112 1251 1390 1668 2085 2502 2780 3336 4170 5004 5560 6255 8340 10008 12510 16680 25020 50040