28926660 has 72 divisors (see below), whose sum is σ = 94227840. Its totient is φ = 6611136.

The previous prime is 28926649. The next prime is 28926679. The reversal of 28926660 is 6662982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1980 + ... + 7859.

It is an arithmetic number, because the mean of its divisors is an integer number (1308720).

Almost surely, 2^28926660 is an apocalyptic number.

28926660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28926660 is an abundant number, since it is smaller than the sum of its proper divisors (65301180).

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

28926660 is a wasteful number, since it uses less digits than its factorization.

28926660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9865 (or 9856 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 28926660 is about 5378.3510484162. The cubic root of 28926660 is about 306.9724711564.

The spelling of 28926660 in words is "twenty-eight million, nine hundred twenty-six thousand, six hundred sixty".