28313502 has 16 divisors (see below), whose sum is σ = 64716672. Its totient is φ = 8089560.

The previous prime is 28313443. The next prime is 28313503. The reversal of 28313502 is 20531382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28313503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337024 + ... + 337107.

It is an arithmetic number, because the mean of its divisors is an integer number (4044792).

Almost surely, 2^28313502 is an apocalyptic number.

28313502 is an abundant number, since it is smaller than the sum of its proper divisors (36403170).

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

28313502 is a wasteful number, since it uses less digits than its factorization.

28313502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674143.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 28313502 is about 5321.0433187487. The cubic root of 28313502 is about 304.7879992313.

Adding to 28313502 its reverse (20531382), we get a palindrome (48844884).

The spelling of 28313502 in words is "twenty-eight million, three hundred thirteen thousand, five hundred two".