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39080 = 235977
BaseRepresentation
bin1001100010101000
31222121102
421202220
52222310
6500532
7221636
oct114250
958542
1039080
11273a8
121a748
1314a32
1410356
15b8a5
hex98a8

39080 has 16 divisors (see below), whose sum is σ = 88020. Its totient is φ = 15616.

The previous prime is 39079. The next prime is 39089. The reversal of 39080 is 8093.

It can be written as a sum of positive squares in 2 ways, for example, as 37636 + 1444 = 194^2 + 38^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (39089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449 + ... + 528.

239080 is an apocalyptic number.

It is an amenable number.

39080 is an abundant number, since it is smaller than the sum of its proper divisors (48940).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44010).

39080 is a wasteful number, since it uses less digits than its factorization.

39080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988 (or 984 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 39080 is about 197.6866206904. The cubic root of 39080 is about 33.9352863638.

Subtracting from 39080 its sum of digits (20), we obtain a triangular number (39060 = T279).

The spelling of 39080 in words is "thirty-nine thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 977 1954 3908 4885 7816 9770 19540 39080