42280028 has 24 divisors (see below), whose sum is σ = 87477600. Its totient is φ = 17494848.

The previous prime is 42280013. The next prime is 42280031. The reversal of 42280028 is 82008224.

It is a junction number, because it is equal to n+sod(n) for n = 42279979 and 42280006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25223 + ... + 26846.

It is an arithmetic number, because the mean of its divisors is an integer number (3644900).

Almost surely, 2^42280028 is an apocalyptic number.

It is an amenable number.

42280028 is an abundant number, since it is smaller than the sum of its proper divisors (45197572).

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

42280028 is a wasteful number, since it uses less digits than its factorization.

42280028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52109 (or 52107 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 42280028 is about 6502.3094358851. The cubic root of 42280028 is about 348.3734815309.

The spelling of 42280028 in words is "forty-two million, two hundred eighty thousand, twenty-eight".