28073544 has 32 divisors (see below), whose sum is σ = 70506720. Its totient is φ = 9314816.

The previous prime is 28073533. The next prime is 28073567. The reversal of 28073544 is 44537082.

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, 2872 + ... + 8024.

It is an arithmetic number, because the mean of its divisors is an integer number (2203335).

Almost surely, 2^28073544 is an apocalyptic number.

28073544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28073544 is an abundant number, since it is smaller than the sum of its proper divisors (42433176).

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

28073544 is a wasteful number, since it uses less digits than its factorization.

28073544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5389 (or 5385 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 28073544 is about 5298.4473197343. The cubic root of 28073544 is about 303.9245253538.

The spelling of 28073544 in words is "twenty-eight million, seventy-three thousand, five hundred forty-four".