23307740 has 36 divisors (see below), whose sum is σ = 51190104. Its totient is φ = 8913696.

The previous prime is 23307733. The next prime is 23307751. The reversal of 23307740 is 4770332.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9479 + ... + 11681.

Almost surely, 2^23307740 is an apocalyptic number.

23307740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23307740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25595052).

23307740 is an abundant number, since it is smaller than the sum of its proper divisors (27882364).

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

23307740 is a wasteful number, since it uses less digits than its factorization.

23307740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258 (or 2233 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 23307740 is about 4827.8090268775. The cubic root of 23307740 is about 285.6494474300.

The spelling of 23307740 in words is "twenty-three million, three hundred seven thousand, seven hundred forty".