20620204460 has 12 divisors (see below), whose sum is σ = 43302429408. Its totient is φ = 8248081776.

The previous prime is 20620204453. The next prime is 20620204463. The reversal of 20620204460 is 6440202602.

It is not an unprimeable number, because it can be changed into a prime (20620204463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515505092 + ... + 515505131.

It is an arithmetic number, because the mean of its divisors is an integer number (3608535784).

Almost surely, 2^20620204460 is an apocalyptic number.

20620204460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20620204460 is an abundant number, since it is smaller than the sum of its proper divisors (22682224948).

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

20620204460 is a wasteful number, since it uses less digits than its factorization.

20620204460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031010232 (or 1031010230 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The spelling of 20620204460 in words is "twenty billion, six hundred twenty million, two hundred four thousand, four hundred sixty".