39332640 has 48 divisors (see below), whose sum is σ = 123899328. Its totient is φ = 10488576.

The previous prime is 39332639. The next prime is 39332663. The reversal of 39332640 is 4623393.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 39332598 and 39332607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40492 + ... + 41451.

It is an arithmetic number, because the mean of its divisors is an integer number (2581236).

Almost surely, 2^39332640 is an apocalyptic number.

39332640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

39332640 is an abundant number, since it is smaller than the sum of its proper divisors (84566688).

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

39332640 is a wasteful number, since it uses less digits than its factorization.

39332640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81961 (or 81953 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 30.

The square root of 39332640 is about 6271.5739651223. The cubic root of 39332640 is about 340.0825635708.

It can be divided in two parts, 393 and 32640, that added together give a palindrome (33033).

The spelling of 39332640 in words is "thirty-nine million, three hundred thirty-two thousand, six hundred forty".