28813137560 has 32 divisors (see below), whose sum is σ = 66208916160. Its totient is φ = 11280036096.

The previous prime is 28813137557. The next prime is 28813137583. The reversal of 28813137560 is 6573131882.

It is a happy number.

It is a super-3 number, since 3×28813137560³ (a number of 32 digits) contains 333 as substring.

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, 7661189 + ... + 7664948.

It is an arithmetic number, because the mean of its divisors is an integer number (2069028630).

Almost surely, 2^28813137560 is an apocalyptic number.

28813137560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28813137560 is an abundant number, since it is smaller than the sum of its proper divisors (37395778600).

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

28813137560 is a wasteful number, since it uses less digits than its factorization.

28813137560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15326195 (or 15326191 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 28813137560 in words is "twenty-eight billion, eight hundred thirteen million, one hundred thirty-seven thousand, five hundred sixty".