28079502 has 24 divisors (see below), whose sum is σ = 61730088. Its totient is φ = 8508720.

The previous prime is 28079489. The next prime is 28079503. The reversal of 28079502 is 20597082.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28079503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18613 + ... + 20064.

It is an arithmetic number, because the mean of its divisors is an integer number (2572087).

Almost surely, 2^28079502 is an apocalyptic number.

28079502 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28079502 is an abundant number, since it is smaller than the sum of its proper divisors (33650586).

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

28079502 is a wasteful number, since it uses less digits than its factorization.

28079502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38704 (or 38693 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 28079502 is about 5299.0095300914. The cubic root of 28079502 is about 303.9460242929.

The spelling of 28079502 in words is "twenty-eight million, seventy-nine thousand, five hundred two".