20010032420 has 48 divisors (see below), whose sum is σ = 48032490240. Its totient is φ = 6859380864.

The previous prime is 20010032389. The next prime is 20010032423. The reversal of 20010032420 is 2423001002.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 20010032395 and 20010032404.

It is not an unprimeable number, because it can be changed into a prime (20010032423) 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, 1224866 + ... + 1241094.

It is an arithmetic number, because the mean of its divisors is an integer number (1000676880).

Almost surely, 2^20010032420 is an apocalyptic number.

20010032420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010032420 is an abundant number, since it is smaller than the sum of its proper divisors (28022457820).

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

20010032420 is a wasteful number, since it uses less digits than its factorization.

20010032420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25052 (or 25050 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20010032420 its reverse (2423001002), we get a palindrome (22433033422).

The spelling of 20010032420 in words is "twenty billion, ten million, thirty-two thousand, four hundred twenty".