20420461092 has 48 divisors (see below), whose sum is σ = 48801392640. Its totient is φ = 6642309408.

The previous prime is 20420461091. The next prime is 20420461093. The reversal of 20420461092 is 29016402402.

It is an interprime number because it is at equal distance from previous prime (20420461091) and next prime (20420461093).

It is not an unprimeable number, because it can be changed into a prime (20420461091) 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, 551209 + ... + 587087.

It is an arithmetic number, because the mean of its divisors is an integer number (1016695680).

Almost surely, 2^20420461092 is an apocalyptic number.

It is an amenable number.

20420461092 is an abundant number, since it is smaller than the sum of its proper divisors (28380931548).

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

20420461092 is a wasteful number, since it uses less digits than its factorization.

20420461092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37032 (or 37030 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 20420461092 its reverse (29016402402), we get a palindrome (49436863494).

The spelling of 20420461092 in words is "twenty billion, four hundred twenty million, four hundred sixty-one thousand, ninety-two".