23129980 has 24 divisors (see below), whose sum is σ = 49371840. Its totient is φ = 9099840.

The previous prime is 23129971. The next prime is 23129983. The reversal of 23129980 is 8992132.

It is a super-3 number, since 3×23129980³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23129983) 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, 8260 + ... + 10699.

It is an arithmetic number, because the mean of its divisors is an integer number (2057160).

Almost surely, 2^23129980 is an apocalyptic number.

23129980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23129980 is an abundant number, since it is smaller than the sum of its proper divisors (26241860).

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

23129980 is a wasteful number, since it uses less digits than its factorization.

23129980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19029 (or 19027 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 23129980 is about 4809.3637832878. The cubic root of 23129980 is about 284.9214105663.

The spelling of 23129980 in words is "twenty-three million, one hundred twenty-nine thousand, nine hundred eighty".