28670976 has 176 divisors, whose sum is σ = 91378080. Its totient is φ = 8847360.

The previous prime is 28670953. The next prime is 28670989. The reversal of 28670976 is 67907682.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469986 + ... + 470046.

Almost surely, 2^28670976 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 28670976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45689040).

28670976 is an abundant number, since it is smaller than the sum of its proper divisors (62707104).

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

28670976 is a wasteful number, since it uses less digits than its factorization.

28670976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 28670976 is about 5354.5285506756. The cubic root of 28670976 is about 306.0653455218.

It can be divided in two parts, 28670 and 976, that added together give a triangular number (29646 = T₂₄₃).

The spelling of 28670976 in words is "twenty-eight million, six hundred seventy thousand, nine hundred seventy-six".