20403266532 has 48 divisors (see below), whose sum is σ = 53339264832. Its totient is φ = 6015703680.

The previous prime is 20403266509. The next prime is 20403266539. The reversal of 20403266532 is 23566230402.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 20403266493 and 20403266502.

It is not an unprimeable number, because it can be changed into a prime (20403266539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2083903 + ... + 2093670.

It is an arithmetic number, because the mean of its divisors is an integer number (1111234684).

Almost surely, 2^20403266532 is an apocalyptic number.

20403266532 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20403266532 is an abundant number, since it is smaller than the sum of its proper divisors (32935998300).

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

20403266532 is a wasteful number, since it uses less digits than its factorization.

20403266532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4177628 (or 4177626 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

Adding to 20403266532 its reverse (23566230402), we get a palindrome (43969496934).

The spelling of 20403266532 in words is "twenty billion, four hundred three million, two hundred sixty-six thousand, five hundred thirty-two".