8542428 has 24 divisors (see below), whose sum is σ = 20186880. Its totient is φ = 2811120.

The previous prime is 8542427. The next prime is 8542451. The reversal of 8542428 is 8242458.

It is a happy number.

It is a super-2 number, since 2×8542428² = 145946152270368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8542421) 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, 3558 + ... + 5453.

It is an arithmetic number, because the mean of its divisors is an integer number (841120).

Almost surely, 2^8542428 is an apocalyptic number.

It is an amenable number.

8542428 is an abundant number, since it is smaller than the sum of its proper divisors (11644452).

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

8542428 is a wasteful number, since it uses less digits than its factorization.

8542428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9097 (or 9095 counting only the distinct ones).

The product of its digits is 20480, while the sum is 33.

The square root of 8542428 is about 2922.7432319655. The cubic root of 8542428 is about 204.4217533715.

The spelling of 8542428 in words is "eight million, five hundred forty-two thousand, four hundred twenty-eight".