20205464430 has 32 divisors (see below), whose sum is σ = 48564792864. Its totient is φ = 5380159616.

The previous prime is 20205464387. The next prime is 20205464431. The reversal of 20205464430 is 3446450202.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20205464431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477117 + ... + 517736.

It is an arithmetic number, because the mean of its divisors is an integer number (1517649777).

Almost surely, 2^20205464430 is an apocalyptic number.

20205464430 is an abundant number, since it is smaller than the sum of its proper divisors (28359328434).

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

20205464430 is a wasteful number, since it uses less digits than its factorization.

20205464430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995540.

The product of its (nonzero) digits is 23040, while the sum is 30.

The spelling of 20205464430 in words is "twenty billion, two hundred five million, four hundred sixty-four thousand, four hundred thirty".