39428436 has 12 divisors (see below), whose sum is σ = 91999712. Its totient is φ = 13142808.

The previous prime is 39428419. The next prime is 39428437. The reversal of 39428436 is 63482493.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 39428394 and 39428403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39428437) by changing a digit.

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, 1642840 + ... + 1642863.

Almost surely, 2^39428436 is an apocalyptic number.

It is an amenable number.

39428436 is an abundant number, since it is smaller than the sum of its proper divisors (52571276).

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

39428436 is a wasteful number, since it uses less digits than its factorization.

39428436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3285710 (or 3285708 counting only the distinct ones).

The product of its digits is 124416, while the sum is 39.

The square root of 39428436 is about 6279.2066377847. The cubic root of 39428436 is about 340.3584339952.

The spelling of 39428436 in words is "thirty-nine million, four hundred twenty-eight thousand, four hundred thirty-six".