28152124 has 96 divisors (see below), whose sum is σ = 67737600. Its totient is φ = 9884160.

The previous prime is 28152121. The next prime is 28152133. The reversal of 28152124 is 42125182.

28152124 = T₁₉₇ + T₁₉₈ + ... + T₅₆₀.

It is a super-2 number, since 2×28152124² = 1585084171422752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28152121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 316272 + ... + 316360.

It is an arithmetic number, because the mean of its divisors is an integer number (705600).

Almost surely, 2^28152124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28152124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33868800).

28152124 is an abundant number, since it is smaller than the sum of its proper divisors (39585476).

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

28152124 is a wasteful number, since it uses less digits than its factorization.

28152124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 201 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The square root of 28152124 is about 5305.8575178759. The cubic root of 28152124 is about 304.2078305291.

The spelling of 28152124 in words is "twenty-eight million, one hundred fifty-two thousand, one hundred twenty-four".