28955850 has 192 divisors, whose sum is σ = 94279680. Its totient is φ = 5702400.

The previous prime is 28955831. The next prime is 28955851. The reversal of 28955850 is 5855982.

It is a super-3 number, since 3×28955850³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28955851) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 265596 + ... + 265704.

It is an arithmetic number, because the mean of its divisors is an integer number (491040).

Almost surely, 2^28955850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28955850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47139840).

28955850 is an abundant number, since it is smaller than the sum of its proper divisors (65323830).

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

28955850 is a wasteful number, since it uses less digits than its factorization.

28955850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 42.

The square root of 28955850 is about 5381.0640211765. The cubic root of 28955850 is about 307.0756921307.

The spelling of 28955850 in words is "twenty-eight million, nine hundred fifty-five thousand, eight hundred fifty".