20174002420 has 96 divisors (see below), whose sum is σ = 51936111360. Its totient is φ = 6477250560.

The previous prime is 20174002369. The next prime is 20174002427. The reversal of 20174002420 is 2420047102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 20174002391 and 20174002400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20174002427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87565 + ... + 219124.

It is an arithmetic number, because the mean of its divisors is an integer number (541001160).

Almost surely, 2^20174002420 is an apocalyptic number.

20174002420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20174002420 is an abundant number, since it is smaller than the sum of its proper divisors (31762108940).

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

20174002420 is a wasteful number, since it uses less digits than its factorization.

20174002420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306745 (or 306743 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

Adding to 20174002420 its reverse (2420047102), we get a palindrome (22594049522).

The spelling of 20174002420 in words is "twenty billion, one hundred seventy-four million, two thousand, four hundred twenty".