42298728 has 32 divisors (see below), whose sum is σ = 105948000. Its totient is φ = 14072768.

The previous prime is 42298727. The next prime is 42298793. The reversal of 42298728 is 82789224.

It is a self number, because there is not a number n which added to its sum of digits gives 42298728.

It is not an unprimeable number, because it can be changed into a prime (42298727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14323 + ... + 17021.

It is an arithmetic number, because the mean of its divisors is an integer number (3310875).

Almost surely, 2^42298728 is an apocalyptic number.

It is an amenable number.

42298728 is an abundant number, since it is smaller than the sum of its proper divisors (63649272).

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

42298728 is a wasteful number, since it uses less digits than its factorization.

42298728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361 (or 3357 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 42298728 is about 6503.7472275604. The cubic root of 42298728 is about 348.4248345708.

The spelling of 42298728 in words is "forty-two million, two hundred ninety-eight thousand, seven hundred twenty-eight".