28873152 has 336 divisors, whose sum is σ = 111191040. Its totient is φ = 7257600.

The previous prime is 28873151. The next prime is 28873189. The reversal of 28873152 is 25137882.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28873151) 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, 931377 + ... + 931407.

Almost surely, 2^28873152 is an apocalyptic number.

28873152 is a gapful number since it is divisible by the number (22) 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 28873152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55595520).

28873152 is an abundant number, since it is smaller than the sum of its proper divisors (82317888).

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

28873152 is a wasteful number, since it uses less digits than its factorization.

28873152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 54 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 28873152 is about 5373.3743588177. The cubic root of 28873152 is about 306.7830769982.

The spelling of 28873152 in words is "twenty-eight million, eight hundred seventy-three thousand, one hundred fifty-two".