28858700 has 72 divisors (see below), whose sum is σ = 68537280. Its totient is φ = 10483200.

The previous prime is 28858699. The next prime is 28858733. The reversal of 28858700 is 785882.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

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, 102560 + ... + 102840.

Almost surely, 2^28858700 is an apocalyptic number.

28858700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28858700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34268640).

28858700 is an abundant number, since it is smaller than the sum of its proper divisors (39678580).

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

28858700 is a wasteful number, since it uses less digits than its factorization.

28858700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 38.

The square root of 28858700 is about 5372.0294116842. The cubic root of 28858700 is about 306.7318833153.

The spelling of 28858700 in words is "twenty-eight million, eight hundred fifty-eight thousand, seven hundred".