20402050452 has 24 divisors (see below), whose sum is σ = 54405468096. Its totient is φ = 5829157248.

The previous prime is 20402050397. The next prime is 20402050469. The reversal of 20402050452 is 25405020402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121440693 + ... + 121440860.

It is an arithmetic number, because the mean of its divisors is an integer number (2266894504).

Almost surely, 2^20402050452 is an apocalyptic number.

It is an amenable number.

20402050452 is an abundant number, since it is smaller than the sum of its proper divisors (34003417644).

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

20402050452 is a wasteful number, since it uses less digits than its factorization.

20402050452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242881567 (or 242881565 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

Adding to 20402050452 its reverse (25405020402), we get a palindrome (45807070854).

The spelling of 20402050452 in words is "twenty billion, four hundred two million, fifty thousand, four hundred fifty-two".