2123366428 has 24 divisors (see below), whose sum is σ = 3862288080. Its totient is φ = 1020203520.

The previous prime is 2123366353. The next prime is 2123366429. The reversal of 2123366428 is 8246633212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123366429) 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 7 ways as a sum of consecutive naturals, for example, 18901 + ... + 67852.

It is an arithmetic number, because the mean of its divisors is an integer number (160928670).

Almost surely, 2^2123366428 is an apocalyptic number.

It is an amenable number.

2123366428 is a deficient number, since it is larger than the sum of its proper divisors (1738921652).

2123366428 is a wasteful number, since it uses less digits than its factorization.

2123366428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86997 (or 86995 counting only the distinct ones).

The product of its digits is 82944, while the sum is 37.

The square root of 2123366428 is about 46080.0003038194. Note that the first 3 decimals coincide. The cubic root of 2123366428 is about 1285.3112698074.

The spelling of 2123366428 in words is "two billion, one hundred twenty-three million, three hundred sixty-six thousand, four hundred twenty-eight".