39805248 has 84 divisors (see below), whose sum is σ = 122541792. Its totient is φ = 11370240.

The previous prime is 39805243. The next prime is 39805273. The reversal of 39805248 is 84250893.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (84).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39805243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7293 + ... + 11523.

Almost surely, 2^39805248 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 39805248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61270896).

39805248 is an abundant number, since it is smaller than the sum of its proper divisors (82736544).

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

39805248 is a wasteful number, since it uses less digits than its factorization.

39805248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4260 (or 4243 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 39805248 is about 6309.1400364867. The cubic root of 39805248 is about 341.4392507128.

The spelling of 39805248 in words is "thirty-nine million, eight hundred five thousand, two hundred forty-eight".