20002420624 has 10 divisors (see below), whose sum is σ = 38754689990. Its totient is φ = 10001210304.

The previous prime is 20002420583. The next prime is 20002420637. The reversal of 20002420624 is 42602420002.

It can be written as a sum of positive squares in only one way, i.e., 13018810000 + 6983610624 = 114100^2 + 83568^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20002420595 and 20002420604.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625075629 + ... + 625075660.

It is an arithmetic number, because the mean of its divisors is an integer number (3875468999).

Almost surely, 2^20002420624 is an apocalyptic number.

It is an amenable number.

20002420624 is a deficient number, since it is larger than the sum of its proper divisors (18752269366).

20002420624 is a wasteful number, since it uses less digits than its factorization.

20002420624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250151297 (or 1250151291 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20002420624 its reverse (42602420002), we get a palindrome (62604840626).

The spelling of 20002420624 in words is "twenty billion, two million, four hundred twenty thousand, six hundred twenty-four".