28872546 has 16 divisors (see below), whose sum is σ = 58441824. Its totient is φ = 9508064.

The previous prime is 28872539. The next prime is 28872551. The reversal of 28872546 is 64527882.

It is a happy number.

It is a super-5 number, since 5×28872546⁵ (a number of 39 digits) contains 55555 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28872498 and 28872507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28491 + ... + 29486.

It is an arithmetic number, because the mean of its divisors is an integer number (3652614).

Almost surely, 2^28872546 is an apocalyptic number.

28872546 is an abundant number, since it is smaller than the sum of its proper divisors (29569278).

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

28872546 is a wasteful number, since it uses less digits than its factorization.

28872546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58065.

The product of its digits is 215040, while the sum is 42.

The square root of 28872546 is about 5373.3179693742. The cubic root of 28872546 is about 306.7809306923.

The spelling of 28872546 in words is "twenty-eight million, eight hundred seventy-two thousand, five hundred forty-six".