39474728 has 8 divisors (see below), whose sum is σ = 74015130. Its totient is φ = 19737360.

The previous prime is 39474683. The next prime is 39474763. The reversal of 39474728 is 82747493.

It can be written as a sum of positive squares in only one way, i.e., 33895684 + 5579044 = 5822^2 + 2362^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2467163 + ... + 2467178.

Almost surely, 2^39474728 is an apocalyptic number.

It is an amenable number.

39474728 is a deficient number, since it is larger than the sum of its proper divisors (34540402).

39474728 is a wasteful number, since it uses less digits than its factorization.

39474728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4934347 (or 4934343 counting only the distinct ones).

The product of its digits is 338688, while the sum is 44.

The square root of 39474728 is about 6282.8916909334. The cubic root of 39474728 is about 340.4915841785.

Adding to 39474728 its reverse (82747493), we get a palindrome (122222221).

The spelling of 39474728 in words is "thirty-nine million, four hundred seventy-four thousand, seven hundred twenty-eight".