28508652 has 48 divisors (see below), whose sum is σ = 74632320. Its totient is φ = 9410256.

The previous prime is 28508629. The next prime is 28508663. The reversal of 28508652 is 25680582.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10323 + ... + 12789.

It is an arithmetic number, because the mean of its divisors is an integer number (1554840).

Almost surely, 2^28508652 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 28508652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37316160).

28508652 is an abundant number, since it is smaller than the sum of its proper divisors (46123668).

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

28508652 is a wasteful number, since it uses less digits than its factorization.

28508652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2587 (or 2579 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 28508652 is about 5339.3493985691. The cubic root of 28508652 is about 305.4866440642.

The spelling of 28508652 in words is "twenty-eight million, five hundred eight thousand, six hundred fifty-two".