39428836 has 6 divisors (see below), whose sum is σ = 69000470. Its totient is φ = 19714416.

The previous prime is 39428813. The next prime is 39428861. The reversal of 39428836 is 63882493.

It can be written as a sum of positive squares in only one way, i.e., 33640000 + 5788836 = 5800^2 + 2406^2 .

It is a junction number, because it is equal to n+sod(n) for n = 39428792 and 39428801.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4928601 + ... + 4928608.

Almost surely, 2^39428836 is an apocalyptic number.

It is an amenable number.

39428836 is a deficient number, since it is larger than the sum of its proper divisors (29571634).

39428836 is a wasteful number, since it uses less digits than its factorization.

39428836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9857213 (or 9857211 counting only the distinct ones).

The product of its digits is 248832, while the sum is 43.

The square root of 39428836 is about 6279.2384888615. The cubic root of 39428836 is about 340.3595849658.

The spelling of 39428836 in words is "thirty-nine million, four hundred twenty-eight thousand, eight hundred thirty-six".