28355069040 has 80 divisors (see below), whose sum is σ = 88386488736. Its totient is φ = 7519564800.

The previous prime is 28355068993. The next prime is 28355069051. The reversal of 28355069040 is 4096055382.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 28355068983 and 28355069001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282931 + ... + 369810.

Almost surely, 2^28355069040 is an apocalyptic number.

28355069040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28355069040 is an abundant number, since it is smaller than the sum of its proper divisors (60031419696).

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

28355069040 is a wasteful number, since it uses less digits than its factorization.

28355069040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652938 (or 652932 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 28355069040 in words is "twenty-eight billion, three hundred fifty-five million, sixty-nine thousand, forty".