20298807290 has 32 divisors (see below), whose sum is σ = 36920307600. Its totient is φ = 8034624000.

The previous prime is 20298807289. The next prime is 20298807293. The reversal of 20298807290 is 9270889202.

It can be written as a sum of positive squares in 8 ways, for example, as 18623787961 + 1675019329 = 136469^2 + 40927^2 .

It is not an unprimeable number, because it can be changed into a prime (20298807293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2238686 + ... + 2247734.

Almost surely, 2^20298807290 is an apocalyptic number.

20298807290 is a deficient number, since it is larger than the sum of its proper divisors (16621500310).

20298807290 is a wasteful number, since it uses less digits than its factorization.

20298807290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11378.

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 20298807290 in words is "twenty billion, two hundred ninety-eight million, eight hundred seven thousand, two hundred ninety".