20356213024 has 24 divisors (see below), whose sum is σ = 45801479808. Its totient is φ = 8724091200.

The previous prime is 20356213019. The next prime is 20356213051. The reversal of 20356213024 is 42031265302.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 20356212983 and 20356213001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45437752 + ... + 45438199.

It is an arithmetic number, because the mean of its divisors is an integer number (1908394992).

Almost surely, 2^20356213024 is an apocalyptic number.

It is an amenable number.

20356213024 is an abundant number, since it is smaller than the sum of its proper divisors (25445266784).

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

20356213024 is an equidigital number, since it uses as much as digits as its factorization.

20356213024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90875968 (or 90875960 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 20356213024 its reverse (42031265302), we get a palindrome (62387478326).

The spelling of 20356213024 in words is "twenty billion, three hundred fifty-six million, two hundred thirteen thousand, twenty-four".