23781330 has 32 divisors (see below), whose sum is σ = 63417600. Its totient is φ = 6341616.

The previous prime is 23781323. The next prime is 23781341. The reversal of 23781330 is 3318732.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 23781294 and 23781303.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43770 + ... + 44309.

It is an arithmetic number, because the mean of its divisors is an integer number (1981800).

Almost surely, 2^23781330 is an apocalyptic number.

23781330 is an abundant number, since it is smaller than the sum of its proper divisors (39636270).

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

23781330 is a wasteful number, since it uses less digits than its factorization.

23781330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88095 (or 88089 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 23781330 is about 4876.6105032081. The cubic root of 23781330 is about 287.5711934591.

The spelling of 23781330 in words is "twenty-three million, seven hundred eighty-one thousand, three hundred thirty".