20629020420 has 72 divisors (see below), whose sum is σ = 62812766016. Its totient is φ = 5480142912.

The previous prime is 20629020403. The next prime is 20629020421. The reversal of 20629020420 is 2402092602.

It is not an unprimeable number, because it can be changed into a prime (20629020421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170542 + ... + 265221.

It is an arithmetic number, because the mean of its divisors is an integer number (872399528).

Almost surely, 2^20629020420 is an apocalyptic number.

20629020420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20629020420 is an abundant number, since it is smaller than the sum of its proper divisors (42183745596).

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

20629020420 is a wasteful number, since it uses less digits than its factorization.

20629020420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436041 (or 436036 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 20629020420 in words is "twenty billion, six hundred twenty-nine million, twenty thousand, four hundred twenty".