28658630 has 96 divisors (see below), whose sum is σ = 70670880. Its totient is φ = 8225280.

The previous prime is 28658599. The next prime is 28658633. The reversal of 28658630 is 3685682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28658633) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69866 + ... + 70274.

It is an arithmetic number, because the mean of its divisors is an integer number (736155).

Almost surely, 2^28658630 is an apocalyptic number.

28658630 is an abundant number, since it is smaller than the sum of its proper divisors (42012250).

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

28658630 is a wasteful number, since it uses less digits than its factorization.

28658630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 28658630 is about 5353.3755706096. The cubic root of 28658630 is about 306.0214076469.

The spelling of 28658630 in words is "twenty-eight million, six hundred fifty-eight thousand, six hundred thirty".