39768228 has 36 divisors (see below), whose sum is σ = 100720620. Its totient is φ = 13230336.

The previous prime is 39768227. The next prime is 39768241. The reversal of 39768228 is 82286793.

It can be written as a sum of positive squares in 2 ways, for example, as 34786404 + 4981824 = 5898^2 + 2232^2 .

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

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (39768221) 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, 30208 + ... + 31496.

It is an arithmetic number, because the mean of its divisors is an integer number (2797795).

Almost surely, 2^39768228 is an apocalyptic number.

It is an amenable number.

39768228 is an abundant number, since it is smaller than the sum of its proper divisors (60952392).

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

39768228 is a wasteful number, since it uses less digits than its factorization.

39768228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156 (or 2151 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 39768228 is about 6306.2055152048. The cubic root of 39768228 is about 341.3333685133. Note that the first 4 decimals are identical.

The spelling of 39768228 in words is "thirty-nine million, seven hundred sixty-eight thousand, two hundred twenty-eight".