28654620 has 24 divisors (see below), whose sum is σ = 80233104. Its totient is φ = 7641216.

The previous prime is 28654601. The next prime is 28654657. The reversal of 28654620 is 2645682.

It is a congruent number.

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, 238729 + ... + 238848.

It is an arithmetic number, because the mean of its divisors is an integer number (3343046).

Almost surely, 2^28654620 is an apocalyptic number.

28654620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28654620 is an abundant number, since it is smaller than the sum of its proper divisors (51578484).

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

28654620 is a wasteful number, since it uses less digits than its factorization.

28654620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477589 (or 477587 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 28654620 is about 5353.0010274611. The cubic root of 28654620 is about 306.0071338420.

The spelling of 28654620 in words is "twenty-eight million, six hundred fifty-four thousand, six hundred twenty".