39428432 has 20 divisors (see below), whose sum is σ = 76492500. Its totient is φ = 19688448.

The previous prime is 39428419. The next prime is 39428437. The reversal of 39428432 is 23482493.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12138256 + 27290176 = 3484^2 + 5224^2 .

It is a junction number, because it is equal to n+sod(n) for n = 39428392 and 39428401.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18998 + ... + 20970.

It is an arithmetic number, because the mean of its divisors is an integer number (3824625).

Almost surely, 2^39428432 is an apocalyptic number.

It is an amenable number.

39428432 is a deficient number, since it is larger than the sum of its proper divisors (37064068).

39428432 is a wasteful number, since it uses less digits than its factorization.

39428432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230 (or 3224 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 39428432 is about 6279.2063192732. The cubic root of 39428432 is about 340.3584224854.

The spelling of 39428432 in words is "thirty-nine million, four hundred twenty-eight thousand, four hundred thirty-two".