28057120 has 192 divisors, whose sum is σ = 85349376. Its totient is φ = 8478720.

The previous prime is 28057067. The next prime is 28057151. The reversal of 28057120 is 2175082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 596937 + ... + 596983.

It is an arithmetic number, because the mean of its divisors is an integer number (444528).

Almost surely, 2^28057120 is an apocalyptic number.

28057120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28057120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42674688).

28057120 is an abundant number, since it is smaller than the sum of its proper divisors (57292256).

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

28057120 is a wasteful number, since it uses less digits than its factorization.

28057120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 28057120 is about 5296.8972049682. The cubic root of 28057120 is about 303.8652449847.

The spelling of 28057120 in words is "twenty-eight million, fifty-seven thousand, one hundred twenty".