20354001224 has 16 divisors (see below), whose sum is σ = 38442321900. Its totient is φ = 10102715392.

The previous prime is 20354001223. The next prime is 20354001251. The reversal of 20354001224 is 42210045302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18254712100 + 2099289124 = 135110^2 + 45818^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20354001224.

It is not an unprimeable number, because it can be changed into a prime (20354001223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9284489 + ... + 9286680.

Almost surely, 2^20354001224 is an apocalyptic number.

It is an amenable number.

20354001224 is a deficient number, since it is larger than the sum of its proper divisors (18088320676).

20354001224 is a wasteful number, since it uses less digits than its factorization.

20354001224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18571312 (or 18571308 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 20354001224 its reverse (42210045302), we get a palindrome (62564046526).

The spelling of 20354001224 in words is "twenty billion, three hundred fifty-four million, one thousand, two hundred twenty-four".