28045080 has 192 divisors, whose sum is σ = 107827200. Its totient is φ = 6186240.

The previous prime is 28045051. The next prime is 28045091. The reversal of 28045080 is 8054082.

28045080 = 246² + 247² + ... + 462².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77941 + ... + 78299.

It is an arithmetic number, because the mean of its divisors is an integer number (561600).

Almost surely, 2^28045080 is an apocalyptic number.

28045080 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 28045080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53913600).

28045080 is an abundant number, since it is smaller than the sum of its proper divisors (79782120).

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

28045080 is a wasteful number, since it uses less digits than its factorization.

28045080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 28045080 is about 5295.7605686058. The cubic root of 28045080 is about 303.8217734167.

The spelling of 28045080 in words is "twenty-eight million, forty-five thousand, eighty".