28520494859472 has 80 divisors (see below), whose sum is σ = 91858217221632. Its totient is φ = 7407920741760.

The previous prime is 28520494859429. The next prime is 28520494859533. The reversal of 28520494859472 is 27495849402582.

It is a junction number, because it is equal to n+sod(n) for n = 28520494859397 and 28520494859406.

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, 3858288358 + ... + 3858295749.

Almost surely, 2^{28520494859472} is an apocalyptic number.

28520494859472 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28520494859472 is an abundant number, since it is smaller than the sum of its proper divisors (63337722362160).

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

28520494859472 is a wasteful number, since it uses less digits than its factorization.

28520494859472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7716584136 (or 7716584130 counting only the distinct ones).

The product of its (nonzero) digits is 464486400, while the sum is 69.

The spelling of 28520494859472 in words is "twenty-eight trillion, five hundred twenty billion, four hundred ninety-four million, eight hundred fifty-nine thousand, four hundred seventy-two".