20522023400 has 48 divisors (see below), whose sum is σ = 47723180640. Its totient is φ = 8207179200.

The previous prime is 20522023381. The next prime is 20522023411. The reversal of 20522023400 is 432022502.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1812557 + ... + 1823843.

It is an arithmetic number, because the mean of its divisors is an integer number (994232930).

Almost surely, 2^20522023400 is an apocalyptic number.

20522023400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20522023400 is an abundant number, since it is smaller than the sum of its proper divisors (27201157240).

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

20522023400 is a wasteful number, since it uses less digits than its factorization.

20522023400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20394 (or 20385 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

Adding to 20522023400 its reverse (432022502), we get a palindrome (20954045902).

The spelling of 20522023400 in words is "twenty billion, five hundred twenty-two million, twenty-three thousand, four hundred".