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39740 = 2251987
BaseRepresentation
bin1001101100111100
32000111212
421230330
52232430
6503552
7223601
oct115474
960455
1039740
1127948
121abb8
131511c
14106a8
15bb95
hex9b3c

39740 has 12 divisors (see below), whose sum is σ = 83496. Its totient is φ = 15888.

The previous prime is 39733. The next prime is 39749. The reversal of 39740 is 4793.

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 (39749) 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, 974 + ... + 1013.

It is an arithmetic number, because the mean of its divisors is an integer number (6958).

239740 is an apocalyptic number.

It is an amenable number.

39740 is an abundant number, since it is smaller than the sum of its proper divisors (43756).

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 (41748).

39740 is a wasteful number, since it uses less digits than its factorization.

39740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996 (or 1994 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 39740 is about 199.3489403032. The cubic root of 39740 is about 34.1252588458.

The spelling of 39740 in words is "thirty-nine thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 1987 3974 7948 9935 19870 39740