28055376 has 80 divisors (see below), whose sum is σ = 81453120. Its totient is φ = 9244800.

The previous prime is 28055333. The next prime is 28055387. The reversal of 28055376 is 67355082.

28055376 is a `hidden beast` number, since 280 + 5 + 5 + 376 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 28055376.

It is a congruent 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, 43311 + ... + 43953.

It is an arithmetic number, because the mean of its divisors is an integer number (1018164).

Almost surely, 2^28055376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28055376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40726560).

28055376 is an abundant number, since it is smaller than the sum of its proper divisors (53397744).

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

28055376 is a wasteful number, since it uses less digits than its factorization.

28055376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761 (or 749 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 28055376 is about 5296.7325777313. The cubic root of 28055376 is about 303.8589488768.

The spelling of 28055376 in words is "twenty-eight million, fifty-five thousand, three hundred seventy-six".