28020348 has 72 divisors (see below), whose sum is σ = 75723648. Its totient is φ = 8715168.

The previous prime is 28020341. The next prime is 28020361. The reversal of 28020348 is 84302082.

It is a super-2 number, since 2×28020348² = 1570279804082208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28020341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35211 + ... + 35997.

Almost surely, 2^28020348 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 28020348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37861824).

28020348 is an abundant number, since it is smaller than the sum of its proper divisors (47703300).

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

28020348 is a wasteful number, since it uses less digits than its factorization.

28020348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 28020348 is about 5293.4249782159. The cubic root of 28020348 is about 303.7324371291.

The spelling of 28020348 in words is "twenty-eight million, twenty thousand, three hundred forty-eight".