20930090290 has 16 divisors (see below), whose sum is σ = 38475741312. Its totient is φ = 8193907504.

The previous prime is 20930090273. The next prime is 20930090297. The reversal of 20930090290 is 9209003902.

It is not an unprimeable number, because it can be changed into a prime (20930090297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22265584 + ... + 22266523.

It is an arithmetic number, because the mean of its divisors is an integer number (2404733832).

Almost surely, 2^20930090290 is an apocalyptic number.

20930090290 is a deficient number, since it is larger than the sum of its proper divisors (17545651022).

20930090290 is a wasteful number, since it uses less digits than its factorization.

20930090290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44532161.

The product of its (nonzero) digits is 8748, while the sum is 34.

The spelling of 20930090290 in words is "twenty billion, nine hundred thirty million, ninety thousand, two hundred ninety".