2290123688 has 8 divisors (see below), whose sum is σ = 4293981930. Its totient is φ = 1145061840.

The previous prime is 2290123687. The next prime is 2290123747. The reversal of 2290123688 is 8863210922.

It can be written as a sum of positive squares in only one way, i.e., 2070432004 + 219691684 = 45502^2 + 14822^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2290123687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143132723 + ... + 143132738.

Almost surely, 2^2290123688 is an apocalyptic number.

It is an amenable number.

2290123688 is a deficient number, since it is larger than the sum of its proper divisors (2003858242).

2290123688 is a wasteful number, since it uses less digits than its factorization.

2290123688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286265467 (or 286265463 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 2290123688 is about 47855.2367876286. The cubic root of 2290123688 is about 1318.1140207595.

The spelling of 2290123688 in words is "two billion, two hundred ninety million, one hundred twenty-three thousand, six hundred eighty-eight".