28284542 has 16 divisors (see below), whose sum is σ = 49844592. Its totient is φ = 11867520.

The previous prime is 28284523. The next prime is 28284577. The reversal of 28284542 is 24548282.

It is a super-2 number, since 2×28284542² = 1600030632299528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49163 + ... + 49734.

It is an arithmetic number, because the mean of its divisors is an integer number (3115287).

Almost surely, 2^28284542 is an apocalyptic number.

28284542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28284542 is a deficient number, since it is larger than the sum of its proper divisors (21560050).

28284542 is a wasteful number, since it uses less digits than its factorization.

28284542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98923.

The product of its digits is 40960, while the sum is 35.

The square root of 28284542 is about 5318.3213517049. The cubic root of 28284542 is about 304.6840479837.

The spelling of 28284542 in words is "twenty-eight million, two hundred eighty-four thousand, five hundred forty-two".