39428646 has 8 divisors (see below), whose sum is σ = 78857304. Its totient is φ = 13142880.

The previous prime is 39428639. The next prime is 39428659. The reversal of 39428646 is 64682493.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

39428646 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 39428598 and 39428607.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 3285715 + ... + 3285726.

It is an arithmetic number, because the mean of its divisors is an integer number (9857163).

Almost surely, 2^39428646 is an apocalyptic number.

39428646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

39428646 is a wasteful number, since it uses less digits than its factorization.

39428646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6571446.

The product of its digits is 248832, while the sum is 42.

The square root of 39428646 is about 6279.2233596202. The cubic root of 39428646 is about 340.3590382557.

The spelling of 39428646 in words is "thirty-nine million, four hundred twenty-eight thousand, six hundred forty-six".