28653072 has 80 divisors (see below), whose sum is σ = 86244480. Its totient is φ = 8027136.

The previous prime is 28653049. The next prime is 28653077. The reversal of 28653072 is 27035682.

It is not an unprimeable number, because it can be changed into a prime (28653077) 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 15 ways as a sum of consecutive naturals, for example, 17004 + ... + 18612.

It is an arithmetic number, because the mean of its divisors is an integer number (1078056).

Almost surely, 2^28653072 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 28653072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43122240).

28653072 is an abundant number, since it is smaller than the sum of its proper divisors (57591408).

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

28653072 is a wasteful number, since it uses less digits than its factorization.

28653072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680 (or 1674 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 28653072 is about 5352.8564337184. The cubic root of 28653072 is about 306.0016232987.

The spelling of 28653072 in words is "twenty-eight million, six hundred fifty-three thousand, seventy-two".