28624146 has 32 divisors (see below), whose sum is σ = 60557760. Its totient is φ = 8994816.

The previous prime is 28624139. The next prime is 28624151. The reversal of 28624146 is 64142682.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28810 + ... + 29786.

It is an arithmetic number, because the mean of its divisors is an integer number (1892430).

Almost surely, 2^28624146 is an apocalyptic number.

28624146 is an abundant number, since it is smaller than the sum of its proper divisors (31933614).

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

28624146 is a wasteful number, since it uses less digits than its factorization.

28624146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258.

The product of its digits is 18432, while the sum is 33.

The square root of 28624146 is about 5350.1538295642. The cubic root of 28624146 is about 305.8986165053.

The spelling of 28624146 in words is "twenty-eight million, six hundred twenty-four thousand, one hundred forty-six".