32720228620 has 12 divisors (see below), whose sum is σ = 68712480144. Its totient is φ = 13088091440.

The previous prime is 32720228617. The next prime is 32720228647. The reversal of 32720228620 is 2682202723.

It is a super-2 number, since 2×32720228620² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 818005696 + ... + 818005735.

It is an arithmetic number, because the mean of its divisors is an integer number (5726040012).

Almost surely, 2^32720228620 is an apocalyptic number.

It is an amenable number.

32720228620 is an abundant number, since it is smaller than the sum of its proper divisors (35992251524).

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

32720228620 is a wasteful number, since it uses less digits than its factorization.

32720228620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636011440 (or 1636011438 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The spelling of 32720228620 in words is "thirty-two billion, seven hundred twenty million, two hundred twenty-eight thousand, six hundred twenty".