20404310452 has 48 divisors (see below), whose sum is σ = 38242002960. Its totient is φ = 9492037632.

The previous prime is 20404310441. The next prime is 20404310461. The reversal of 20404310452 is 25401340402.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1863130896 + 18541179556 = 43164^2 + 136166^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9582924 + ... + 9585052.

It is an arithmetic number, because the mean of its divisors is an integer number (796708395).

Almost surely, 2^20404310452 is an apocalyptic number.

It is an amenable number.

20404310452 is a deficient number, since it is larger than the sum of its proper divisors (17837692508).

20404310452 is a wasteful number, since it uses less digits than its factorization.

20404310452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700 (or 3698 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 20404310452 its reverse (25401340402), we get a palindrome (45805650854).

The spelling of 20404310452 in words is "twenty billion, four hundred four million, three hundred ten thousand, four hundred fifty-two".