28073552 has 40 divisors (see below), whose sum is σ = 59058720. Its totient is φ = 12850560.

The previous prime is 28073533. The next prime is 28073567. The reversal of 28073552 is 25537082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28427 + ... + 29397.

It is an arithmetic number, because the mean of its divisors is an integer number (1476468).

Almost surely, 2^28073552 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 28073552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29529360).

28073552 is an abundant number, since it is smaller than the sum of its proper divisors (30985168).

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

28073552 is a wasteful number, since it uses less digits than its factorization.

28073552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131 (or 1125 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 28073552 is about 5298.4480746724. The cubic root of 28073552 is about 303.9245542232.

The spelling of 28073552 in words is "twenty-eight million, seventy-three thousand, five hundred fifty-two".