20274012192 has 48 divisors (see below), whose sum is σ = 60822038592. Its totient is φ = 5792574720.

The previous prime is 20274012191. The next prime is 20274012197. The reversal of 20274012192 is 29121047202.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×20274012192² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20274012191) by changing a digit.

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, 15084159 + ... + 15085502.

It is an arithmetic number, because the mean of its divisors is an integer number (1267125804).

Almost surely, 2^20274012192 is an apocalyptic number.

It is an amenable number.

20274012192 is an abundant number, since it is smaller than the sum of its proper divisors (40548026400).

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

20274012192 is a wasteful number, since it uses less digits than its factorization.

20274012192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30169681 (or 30169673 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

Adding to 20274012192 its reverse (29121047202), we get a palindrome (49395059394).

The spelling of 20274012192 in words is "twenty billion, two hundred seventy-four million, twelve thousand, one hundred ninety-two".