28153554 has 96 divisors (see below), whose sum is σ = 70607040. Its totient is φ = 7413120.

The previous prime is 28153537. The next prime is 28153583. The reversal of 28153554 is 45535182.

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, 179244 + ... + 179400.

It is an arithmetic number, because the mean of its divisors is an integer number (735490).

Almost surely, 2^28153554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28153554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35303520).

28153554 is an abundant number, since it is smaller than the sum of its proper divisors (42453486).

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

28153554 is a wasteful number, since it uses less digits than its factorization.

28153554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 205 counting only the distinct ones).

The product of its digits is 24000, while the sum is 33.

The square root of 28153554 is about 5305.9922728930. The cubic root of 28153554 is about 304.2129812338.

It can be divided in two parts, 281 and 53554, that added together give a palindrome (53835).

The spelling of 28153554 in words is "twenty-eight million, one hundred fifty-three thousand, five hundred fifty-four".