39228445 has 24 divisors (see below), whose sum is σ = 51423840. Its totient is φ = 28647360.

The previous prime is 39228439. The next prime is 39228457. The reversal of 39228445 is 54482293.

It is a happy number.

It is not a de Polignac number, because 39228445 - 2⁹ = 39227933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79650 + ... + 80140.

It is an arithmetic number, because the mean of its divisors is an integer number (2142660).

Almost surely, 2^39228445 is an apocalyptic number.

It is an amenable number.

39228445 is a deficient number, since it is larger than the sum of its proper divisors (12195395).

39228445 is a wasteful number, since it uses less digits than its factorization.

39228445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573 (or 544 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 39228445 is about 6263.2615305446. The cubic root of 39228445 is about 339.7819969277.

It can be divided in two parts, 39 and 228445, that added together give a square (228484 = 478²).

The spelling of 39228445 in words is "thirty-nine million, two hundred twenty-eight thousand, four hundred forty-five".