28730502 has 12 divisors (see below), whose sum is σ = 62249460. Its totient is φ = 9576828.

The previous prime is 28730501. The next prime is 28730509. The reversal of 28730502 is 20503782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28730501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 798052 + ... + 798087.

It is an arithmetic number, because the mean of its divisors is an integer number (5187455).

Almost surely, 2^28730502 is an apocalyptic number.

28730502 is an abundant number, since it is smaller than the sum of its proper divisors (33518958).

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

28730502 is a wasteful number, since it uses less digits than its factorization.

28730502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596147 (or 1596144 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 28730502 is about 5360.0841411306. The cubic root of 28730502 is about 306.2770143045.

The spelling of 28730502 in words is "twenty-eight million, seven hundred thirty thousand, five hundred two".