23028973009 has 45 divisors (see below), whose sum is σ = 28528949673. Its totient is φ = 18585493416.

The previous prime is 23028973001. The next prime is 23028973057. The reversal of 23028973009 is 90037982032.

It is a happy number.

The square root of 23028973009 is 151753.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 23028973009 - 2³ = 23028973001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23028973001) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 141281962 + ... + 141282124.

Almost surely, 2^23028973009 is an apocalyptic number.

23028973009 is the 151753-rd square number.

23028973009 is the 75877-th centered octagonal number.

It is an amenable number.

23028973009 is a deficient number, since it is larger than the sum of its proper divisors (5499976664).

23028973009 is an frugal number, since it uses more digits than its factorization.

23028973009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 23028973009 in words is "twenty-three billion, twenty-eight million, nine hundred seventy-three thousand, nine".