28763072 has 56 divisors (see below), whose sum is σ = 62130432. Its totient is φ = 13132800.

The previous prime is 28763057. The next prime is 28763101. The reversal of 28763072 is 27036782.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150497 + ... + 150687.

It is an arithmetic number, because the mean of its divisors is an integer number (1109472).

Almost surely, 2^28763072 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 28763072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31065216).

28763072 is an abundant number, since it is smaller than the sum of its proper divisors (33367360).

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

28763072 is a wasteful number, since it uses less digits than its factorization.

28763072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 28763072 is about 5363.1214791388. The cubic root of 28763072 is about 306.3927063915.

The spelling of 28763072 in words is "twenty-eight million, seven hundred sixty-three thousand, seventy-two".