42987028 has 48 divisors (see below), whose sum is σ = 88905600. Its totient is φ = 17806464.

The previous prime is 42987011. The next prime is 42987037. The reversal of 42987028 is 82078924.

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, 122998 + ... + 123346.

It is an arithmetic number, because the mean of its divisors is an integer number (1852200).

Almost surely, 2^42987028 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 42987028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44452800).

42987028 is an abundant number, since it is smaller than the sum of its proper divisors (45918572).

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

42987028 is a wasteful number, since it uses less digits than its factorization.

42987028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 42987028 is about 6556.4493439666. The cubic root of 42987028 is about 350.3045729764.

The spelling of 42987028 in words is "forty-two million, nine hundred eighty-seven thousand, twenty-eight".