39428872 has 16 divisors (see below), whose sum is σ = 84490560. Its totient is φ = 16898064.

The previous prime is 39428863. The next prime is 39428881. The reversal of 39428872 is 27882493.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (39428863) and next prime (39428881).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351988 + ... + 352099.

It is an arithmetic number, because the mean of its divisors is an integer number (5280660).

Almost surely, 2^39428872 is an apocalyptic number.

It is an amenable number.

39428872 is an abundant number, since it is smaller than the sum of its proper divisors (45061688).

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

39428872 is a wasteful number, since it uses less digits than its factorization.

39428872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704100 (or 704096 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 39428872 is about 6279.2413554505. The cubic root of 39428872 is about 340.3596885527.

The spelling of 39428872 in words is "thirty-nine million, four hundred twenty-eight thousand, eight hundred seventy-two".