39201228 has 36 divisors (see below), whose sum is σ = 108101448. Its totient is φ = 11879040.

The previous prime is 39201203. The next prime is 39201229. The reversal of 39201228 is 82210293.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (39201229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49101 + ... + 49892.

It is an arithmetic number, because the mean of its divisors is an integer number (3002818).

Almost surely, 2^39201228 is an apocalyptic number.

It is an amenable number.

39201228 is an abundant number, since it is smaller than the sum of its proper divisors (68900220).

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

39201228 is a wasteful number, since it uses less digits than its factorization.

39201228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99014 (or 99009 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 39201228 is about 6261.0884037841. The cubic root of 39201228 is about 339.7033976172.

The spelling of 39201228 in words is "thirty-nine million, two hundred one thousand, two hundred twenty-eight".