28533609040 has 40 divisors (see below), whose sum is σ = 66437899488. Its totient is φ = 11396711040.

The previous prime is 28533608989. The next prime is 28533609053. The reversal of 28533609040 is 4090633582.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 28533608984 and 28533609002.

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, 206466 + ... + 315745.

Almost surely, 2^28533609040 is an apocalyptic number.

28533609040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28533609040 is an abundant number, since it is smaller than the sum of its proper divisors (37904290448).

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

28533609040 is a wasteful number, since it uses less digits than its factorization.

28533609040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522907 (or 522901 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 28533609040 in words is "twenty-eight billion, five hundred thirty-three million, six hundred nine thousand, forty".