28313976 has 64 divisors (see below), whose sum is σ = 77565600. Its totient is φ = 8572928.

The previous prime is 28313969. The next prime is 28313977. The reversal of 28313976 is 67931382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28313977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10636 + ... + 13028.

Almost surely, 2^28313976 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 28313976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38782800).

28313976 is an abundant number, since it is smaller than the sum of its proper divisors (49251624).

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

28313976 is a wasteful number, since it uses less digits than its factorization.

28313976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2448 (or 2444 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 28313976 is about 5321.0878586996. The cubic root of 28313976 is about 304.7897000536.

The spelling of 28313976 in words is "twenty-eight million, three hundred thirteen thousand, nine hundred seventy-six".