28010532 has 72 divisors (see below), whose sum is σ = 72930816. Its totient is φ = 8360000.

The previous prime is 28010531. The next prime is 28010533. The reversal of 28010532 is 23501082.

It is an interprime number because it is at equal distance from previous prime (28010531) and next prime (28010533).

It is a junction number, because it is equal to n+sod(n) for n = 28010499 and 28010508.

It is not an unprimeable number, because it can be changed into a prime (28010531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146557 + ... + 146747.

It is an arithmetic number, because the mean of its divisors is an integer number (1012928).

Almost surely, 2^28010532 is an apocalyptic number.

28010532 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 28010532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36465408).

28010532 is an abundant number, since it is smaller than the sum of its proper divisors (44920284).

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

28010532 is a wasteful number, since it uses less digits than its factorization.

28010532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 28010532 is about 5292.4977090217. The cubic root of 28010532 is about 303.6969654567.

The spelling of 28010532 in words is "twenty-eight million, ten thousand, five hundred thirty-two".