20403040324 has 6 divisors (see below), whose sum is σ = 35705320574. Its totient is φ = 10201520160.

The previous prime is 20403040309. The next prime is 20403040369. The reversal of 20403040324 is 42304030402.

It can be written as a sum of positive squares in only one way, i.e., 17551480324 + 2851560000 = 132482^2 + 53400^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20403040295 and 20403040304.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2550380037 + ... + 2550380044.

Almost surely, 2^20403040324 is an apocalyptic number.

It is an amenable number.

20403040324 is a deficient number, since it is larger than the sum of its proper divisors (15302280250).

20403040324 is a wasteful number, since it uses less digits than its factorization.

20403040324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5100760085 (or 5100760083 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 20403040324 its reverse (42304030402), we get a palindrome (62707070726).

The spelling of 20403040324 in words is "twenty billion, four hundred three million, forty thousand, three hundred twenty-four".