13228597620 has 600 divisors, whose sum is σ = 51244855200. Its totient is φ = 2848535424.

The previous prime is 13228597609. The next prime is 13228597649. The reversal of 13228597620 is 2679582231.

13228597620 is a `hidden beast` number, since 1 + 32 + 2 + 8 + 597 + 6 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 199 ways as a sum of consecutive naturals, for example, 73902691 + ... + 73902869.

It is an arithmetic number, because the mean of its divisors is an integer number (85408092).

Almost surely, 2^13228597620 is an apocalyptic number.

13228597620 is a gapful number since it is divisible by the number (10) 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 13228597620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25622427600).

13228597620 is an abundant number, since it is smaller than the sum of its proper divisors (38016257580).

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

13228597620 is a wasteful number, since it uses less digits than its factorization.

13228597620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 13228597620 in words is "thirteen billion, two hundred twenty-eight million, five hundred ninety-seven thousand, six hundred twenty".