20340502020 has 72 divisors (see below), whose sum is σ = 61871584320. Its totient is φ = 5409007680.

The previous prime is 20340501997. The next prime is 20340502031. The reversal of 20340502020 is 2020504302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20340501984 and 20340502002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92766 + ... + 222005.

It is an arithmetic number, because the mean of its divisors is an integer number (859327560).

Almost surely, 2^20340502020 is an apocalyptic number.

20340502020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20340502020 is an abundant number, since it is smaller than the sum of its proper divisors (41531082300).

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

20340502020 is a wasteful number, since it uses less digits than its factorization.

20340502020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315145 (or 315140 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The spelling of 20340502020 in words is "twenty billion, three hundred forty million, five hundred two thousand, twenty".