290423606920 has 32 divisors (see below), whose sum is σ = 653692633920. Its totient is φ = 116126861760.

The previous prime is 290423606897. The next prime is 290423606959. The reversal of 290423606920 is 29606324092.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1220052 + ... + 1438531.

It is an arithmetic number, because the mean of its divisors is an integer number (20427894810).

Almost surely, 2^290423606920 is an apocalyptic number.

290423606920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

290423606920 is an abundant number, since it is smaller than the sum of its proper divisors (363269027000).

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

290423606920 is a wasteful number, since it uses less digits than its factorization.

290423606920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661325 (or 2661321 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 43.

The spelling of 290423606920 in words is "two hundred ninety billion, four hundred twenty-three million, six hundred six thousand, nine hundred twenty".