42928772 has 6 divisors (see below), whose sum is σ = 75125358. Its totient is φ = 21464384.

The previous prime is 42928759. The next prime is 42928783. The reversal of 42928772 is 27782924.

It can be written as a sum of positive squares in only one way, i.e., 22714756 + 20214016 = 4766^2 + 4496^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5366093 + ... + 5366100.

It is an arithmetic number, because the mean of its divisors is an integer number (12520893).

Almost surely, 2^42928772 is an apocalyptic number.

It is an amenable number.

42928772 is a deficient number, since it is larger than the sum of its proper divisors (32196586).

42928772 is a wasteful number, since it uses less digits than its factorization.

42928772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10732197 (or 10732195 counting only the distinct ones).

The product of its digits is 112896, while the sum is 41.

The square root of 42928772 is about 6552.0051892531. The cubic root of 42928772 is about 350.1462572412.

The spelling of 42928772 in words is "forty-two million, nine hundred twenty-eight thousand, seven hundred seventy-two".