28764708 has 96 divisors (see below), whose sum is σ = 82252800. Its totient is φ = 7641216.

The previous prime is 28764677. The next prime is 28764709. The reversal of 28764708 is 80746782.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 28764708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28764709) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 106798 + ... + 107066.

It is an arithmetic number, because the mean of its divisors is an integer number (856800).

Almost surely, 2^28764708 is an apocalyptic number.

28764708 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 28764708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41126400).

28764708 is an abundant number, since it is smaller than the sum of its proper divisors (53488092).

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

28764708 is a wasteful number, since it uses less digits than its factorization.

28764708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 28764708 is about 5363.2740000861. The cubic root of 28764708 is about 306.3985153325.

The spelling of 28764708 in words is "twenty-eight million, seven hundred sixty-four thousand, seven hundred eight".