42783928 has 16 divisors (see below), whose sum is σ = 87512760. Its totient is φ = 19447200.

The previous prime is 42783919. The next prime is 42783931. The reversal of 42783928 is 82938724.

It is a happy number.

It is a congruent number.

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, 243003 + ... + 243178.

Almost surely, 2^42783928 is an apocalyptic number.

It is an amenable number.

42783928 is an abundant number, since it is smaller than the sum of its proper divisors (44728832).

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

42783928 is a wasteful number, since it uses less digits than its factorization.

42783928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486198 (or 486194 counting only the distinct ones).

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

The square root of 42783928 is about 6540.9424397406. The cubic root of 42783928 is about 349.7520093631.

The spelling of 42783928 in words is "forty-two million, seven hundred eighty-three thousand, nine hundred twenty-eight".