39073640 has 32 divisors (see below), whose sum is σ = 90754560. Its totient is φ = 15124800.

The previous prime is 39073589. The next prime is 39073649. The reversal of 39073640 is 4637093.

It is a junction number, because it is equal to n+sod(n) for n = 39073597 and 39073606.

It is not an unprimeable number, because it can be changed into a prime (39073649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14516 + ... + 16995.

It is an arithmetic number, because the mean of its divisors is an integer number (2836080).

Almost surely, 2^39073640 is an apocalyptic number.

It is an amenable number.

39073640 is an abundant number, since it is smaller than the sum of its proper divisors (51680920).

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

39073640 is a wasteful number, since it uses less digits than its factorization.

39073640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31553 (or 31549 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 39073640 is about 6250.8911364701. The cubic root of 39073640 is about 339.3344535284.

The spelling of 39073640 in words is "thirty-nine million, seventy-three thousand, six hundred forty".