28010948 has 36 divisors (see below), whose sum is σ = 57355452. Its totient is φ = 11934720.

The previous prime is 28010947. The next prime is 28010963. The reversal of 28010948 is 84901082.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19201924 + 8809024 = 4382^2 + 2968^2 .

It is a super-2 number, since 2×28010948² = 1569226415717408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28010947) 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 11 ways as a sum of consecutive naturals, for example, 46940 + ... + 47532.

It is an arithmetic number, because the mean of its divisors is an integer number (1593207).

Almost surely, 2^28010948 is an apocalyptic number.

28010948 is a gapful number since it is divisible by the number (28) 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 28010948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28677726).

28010948 is an abundant number, since it is smaller than the sum of its proper divisors (29344504).

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

28010948 is a wasteful number, since it uses less digits than its factorization.

28010948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852 (or 843 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 28010948 is about 5292.5370097903. The cubic root of 28010948 is about 303.6984689068.

The spelling of 28010948 in words is "twenty-eight million, ten thousand, nine hundred forty-eight".