28958680 has 16 divisors (see below), whose sum is σ = 65157120. Its totient is φ = 11583456.

The previous prime is 28958663. The next prime is 28958687. The reversal of 28958680 is 8685982.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28958680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28958687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361944 + ... + 362023.

It is an arithmetic number, because the mean of its divisors is an integer number (4072320).

Almost surely, 2^28958680 is an apocalyptic number.

28958680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28958680 is an abundant number, since it is smaller than the sum of its proper divisors (36198440).

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

28958680 is a wasteful number, since it uses less digits than its factorization.

28958680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723978 (or 723974 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 28958680 is about 5381.3269738978. The cubic root of 28958680 is about 307.0856958191.

The spelling of 28958680 in words is "twenty-eight million, nine hundred fifty-eight thousand, six hundred eighty".