28204674434560 has 160 divisors (see below), whose sum is σ = 72940715682912. Its totient is φ = 10397779230720.

The previous prime is 28204674434551. The next prime is 28204674434627. The reversal of 28204674434560 is 6543447640282.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

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, 20671407 + ... + 21993553.

Almost surely, 2^{28204674434560} is an apocalyptic number.

28204674434560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28204674434560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36470357841456).

28204674434560 is an abundant number, since it is smaller than the sum of its proper divisors (44736041248352).

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

28204674434560 is a wasteful number, since it uses less digits than its factorization.

28204674434560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322824 (or 1322808 counting only the distinct ones).

The product of its (nonzero) digits is 30965760, while the sum is 55.

The spelling of 28204674434560 in words is "twenty-eight trillion, two hundred four billion, six hundred seventy-four million, four hundred thirty-four thousand, five hundred sixty".