28954660 has 24 divisors (see below), whose sum is σ = 69491520. Its totient is φ = 9927264.

The previous prime is 28954657. The next prime is 28954661. The reversal of 28954660 is 6645982.

It is a happy number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28954661) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 103270 + ... + 103549.

It is an arithmetic number, because the mean of its divisors is an integer number (2895480).

Almost surely, 2^28954660 is an apocalyptic number.

28954660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28954660 is an abundant number, since it is smaller than the sum of its proper divisors (40536860).

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

28954660 is a wasteful number, since it uses less digits than its factorization.

28954660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206835 (or 206833 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 28954660 is about 5380.9534471133. The cubic root of 28954660 is about 307.0714854381.

The spelling of 28954660 in words is "twenty-eight million, nine hundred fifty-four thousand, six hundred sixty".