20020510340 has 12 divisors (see below), whose sum is σ = 42043071756. Its totient is φ = 8008204128.

The previous prime is 20020510339. The next prime is 20020510369. The reversal of 20020510340 is 4301502002.

It can be written as a sum of positive squares in 2 ways, for example, as 9723537664 + 10296972676 = 98608^2 + 101474^2 .

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, 500512739 + ... + 500512778.

It is an arithmetic number, because the mean of its divisors is an integer number (3503589313).

Almost surely, 2^20020510340 is an apocalyptic number.

20020510340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020510340 is an abundant number, since it is smaller than the sum of its proper divisors (22022561416).

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

20020510340 is a wasteful number, since it uses less digits than its factorization.

20020510340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001025526 (or 1001025524 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The spelling of 20020510340 in words is "twenty billion, twenty million, five hundred ten thousand, three hundred forty".