39222500 has 60 divisors (see below), whose sum is σ = 88893420. Its totient is φ = 15120000.

The previous prime is 39222499. The next prime is 39222511. The reversal of 39222500 is 522293.

It can be written as a sum of positive squares in 10 ways, for example, as 31427236 + 7795264 = 5606^2 + 2792^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 72230 + ... + 72770.

It is an arithmetic number, because the mean of its divisors is an integer number (1481557).

Almost surely, 2^39222500 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 39222500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44446710).

39222500 is an abundant number, since it is smaller than the sum of its proper divisors (49670920).

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

39222500 is a wasteful number, since it uses less digits than its factorization.

39222500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 39222500 is about 6262.7869195750. The cubic root of 39222500 is about 339.7648316112.

Adding to 39222500 its reverse (522293), we get a palindrome (39744793).

The spelling of 39222500 in words is "thirty-nine million, two hundred twenty-two thousand, five hundred".