39540736 has 48 divisors (see below), whose sum is σ = 81081000. Its totient is φ = 19267584.

The previous prime is 39540733. The next prime is 39540737. The reversal of 39540736 is 63704593.

It is a junction number, because it is equal to n+sod(n) for n = 39540695 and 39540704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39540733) 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, 87840 + ... + 88288.

Almost surely, 2^39540736 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 39540736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40540500).

39540736 is an abundant number, since it is smaller than the sum of its proper divisors (41540264).

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

39540736 is an equidigital number, since it uses as much as digits as its factorization.

39540736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 39540736 is about 6288.1424920242. The cubic root of 39540736 is about 340.6812637862.

The spelling of 39540736 in words is "thirty-nine million, five hundred forty thousand, seven hundred thirty-six".