28153950 has 96 divisors (see below), whose sum is σ = 77352192. Its totient is φ = 6720000.

The previous prime is 28153933. The next prime is 28153967. The reversal of 28153950 is 5935182.

It is an interprime number because it is at equal distance from previous prime (28153933) and next prime (28153967).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 186375 + ... + 186525.

It is an arithmetic number, because the mean of its divisors is an integer number (805752).

Almost surely, 2^28153950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28153950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38676096).

28153950 is an abundant number, since it is smaller than the sum of its proper divisors (49198242).

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

28153950 is a wasteful number, since it uses less digits than its factorization.

28153950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 28153950 is about 5306.0295890619. The cubic root of 28153950 is about 304.2144075519.

The spelling of 28153950 in words is "twenty-eight million, one hundred fifty-three thousand, nine hundred fifty".