28916658 has 24 divisors (see below), whose sum is σ = 65377728. Its totient is φ = 9219672.

The previous prime is 28916653. The next prime is 28916659. The reversal of 28916658 is 85661982.

It is not an unprimeable number, because it can be changed into a prime (28916653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34510 + ... + 35337.

It is an arithmetic number, because the mean of its divisors is an integer number (2724072).

Almost surely, 2^28916658 is an apocalyptic number.

28916658 is an abundant number, since it is smaller than the sum of its proper divisors (36461070).

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

28916658 is a wasteful number, since it uses less digits than its factorization.

28916658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69878 (or 69875 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 28916658 is about 5377.4211291287. The cubic root of 28916658 is about 306.9370863522.

The spelling of 28916658 in words is "twenty-eight million, nine hundred sixteen thousand, six hundred fifty-eight".