28966554 has 24 divisors (see below), whose sum is σ = 62892180. Its totient is φ = 9635328.

The previous prime is 28966549. The next prime is 28966571. The reversal of 28966554 is 45566982.

28966554 is a `hidden beast` number, since 2 + 8 + 96 + 6 + 554 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24235929 + 4730625 = 4923^2 + 2175^2 .

It is a super-2 number, since 2×28966554² = 1678122501269832, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 8992 + ... + 11780.

Almost surely, 2^28966554 is an apocalyptic number.

28966554 is an abundant number, since it is smaller than the sum of its proper divisors (33925626).

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

28966554 is a wasteful number, since it uses less digits than its factorization.

28966554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374 (or 3371 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 28966554 is about 5382.0585281099. The cubic root of 28966554 is about 307.1135259739.

The spelling of 28966554 in words is "twenty-eight million, nine hundred sixty-six thousand, five hundred fifty-four".