20489176290 has 32 divisors (see below), whose sum is σ = 53644389696. Its totient is φ = 4967072960.

The previous prime is 20489176283. The next prime is 20489176297. The reversal of 20489176290 is 9267198402.

It is an interprime number because it is at equal distance from previous prime (20489176283) and next prime (20489176297).

It is not an unprimeable number, because it can be changed into a prime (20489176297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31043877 + ... + 31044536.

It is an arithmetic number, because the mean of its divisors is an integer number (1676387178).

Almost surely, 2^20489176290 is an apocalyptic number.

20489176290 is an abundant number, since it is smaller than the sum of its proper divisors (33155213406).

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

20489176290 is a wasteful number, since it uses less digits than its factorization.

20489176290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62088434.

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 20489176290 in words is "twenty billion, four hundred eighty-nine million, one hundred seventy-six thousand, two hundred ninety".