39622240 has 96 divisors (see below), whose sum is σ = 113327424. Its totient is φ = 12779520.

The previous prime is 39622211. The next prime is 39622241. The reversal of 39622240 is 4222693.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 39622199 and 39622208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39622241) 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 15 ways as a sum of consecutive naturals, for example, 18000 + ... + 20080.

It is an arithmetic number, because the mean of its divisors is an integer number (1180494).

Almost surely, 2^39622240 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 39622240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56663712).

39622240 is an abundant number, since it is smaller than the sum of its proper divisors (73705184).

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

39622240 is a wasteful number, since it uses less digits than its factorization.

39622240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120 (or 2112 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 39622240 is about 6294.6199249836. The cubic root of 39622240 is about 340.9151814454.

The spelling of 39622240 in words is "thirty-nine million, six hundred twenty-two thousand, two hundred forty".