28535544 has 32 divisors (see below), whose sum is σ = 79266000. Its totient is φ = 9511776.

The previous prime is 28535543. The next prime is 28535567. The reversal of 28535544 is 44553582.

28535544 is a `hidden beast` number, since 2 + 85 + 35 + 544 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 28535499 and 28535508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28535543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65839 + ... + 66270.

Almost surely, 2^28535544 is an apocalyptic number.

28535544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28535544 is an abundant number, since it is smaller than the sum of its proper divisors (50730456).

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

28535544 is a wasteful number, since it uses less digits than its factorization.

28535544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132124 (or 132114 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The square root of 28535544 is about 5341.8670893237. The cubic root of 28535544 is about 305.5826683061.

The spelling of 28535544 in words is "twenty-eight million, five hundred thirty-five thousand, five hundred forty-four".