42667828 has 48 divisors (see below), whose sum is σ = 88099200. Its totient is φ = 18072768.

The previous prime is 42667819. The next prime is 42667831. The reversal of 42667828 is 82876624.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187851 + ... + 188077.

It is an arithmetic number, because the mean of its divisors is an integer number (1835400).

Almost surely, 2^42667828 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42667828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44049600).

42667828 is an abundant number, since it is smaller than the sum of its proper divisors (45431372).

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

42667828 is a wasteful number, since it uses less digits than its factorization.

42667828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 373 counting only the distinct ones).

The product of its digits is 258048, while the sum is 43.

The square root of 42667828 is about 6532.0615428822. The cubic root of 42667828 is about 349.4353562349.

The spelling of 42667828 in words is "forty-two million, six hundred sixty-seven thousand, eight hundred twenty-eight".