28545048 has 240 divisors, whose sum is σ = 99316800. Its totient is φ = 7620480.

The previous prime is 28545007. The next prime is 28545067. The reversal of 28545048 is 84054582.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 920793 + ... + 920823.

It is an arithmetic number, because the mean of its divisors is an integer number (413820).

Almost surely, 2^28545048 is an apocalyptic number.

28545048 is a gapful number since it is divisible by the number (28) 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 28545048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49658400).

28545048 is an abundant number, since it is smaller than the sum of its proper divisors (70771752).

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

28545048 is a wasteful number, since it uses less digits than its factorization.

28545048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The square root of 28545048 is about 5342.7565918728. The cubic root of 28545048 is about 305.6165901559.

The spelling of 28545048 in words is "twenty-eight million, five hundred forty-five thousand, forty-eight".