23429720 has 16 divisors (see below), whose sum is σ = 52716960. Its totient is φ = 9371872.

The previous prime is 23429687. The next prime is 23429729. The reversal of 23429720 is 2792432.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23429729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292832 + ... + 292911.

It is an arithmetic number, because the mean of its divisors is an integer number (3294810).

Almost surely, 2^23429720 is an apocalyptic number.

23429720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23429720 is an abundant number, since it is smaller than the sum of its proper divisors (29287240).

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

23429720 is a wasteful number, since it uses less digits than its factorization.

23429720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585754 (or 585750 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 23429720 is about 4840.4256011223. The cubic root of 23429720 is about 286.1468917942.

The spelling of 23429720 in words is "twenty-three million, four hundred twenty-nine thousand, seven hundred twenty".