28023072 has 192 divisors, whose sum is σ = 97542144. Its totient is φ = 6819840.

The previous prime is 28023071. The next prime is 28023091. The reversal of 28023072 is 27032082.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28023071) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 125553 + ... + 125775.

It is an arithmetic number, because the mean of its divisors is an integer number (508032).

Almost surely, 2^28023072 is an apocalyptic number.

28023072 is a gapful number since it is divisible by the number (22) 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 28023072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48771072).

28023072 is an abundant number, since it is smaller than the sum of its proper divisors (69519072).

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

28023072 is a wasteful number, since it uses less digits than its factorization.

28023072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 28023072 is about 5293.6822722940. The cubic root of 28023072 is about 303.7422792666.

The spelling of 28023072 in words is "twenty-eight million, twenty-three thousand, seventy-two".