23721061 has 8 divisors (see below), whose sum is σ = 29195264. Its totient is φ = 18768240.

The previous prime is 23721023. The next prime is 23721067. The reversal of 23721061 is 16012732.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23721061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23721067) 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, 130245 + ... + 130426.

It is an arithmetic number, because the mean of its divisors is an integer number (3649408).

Almost surely, 2^23721061 is an apocalyptic number.

It is an amenable number.

23721061 is a deficient number, since it is larger than the sum of its proper divisors (5474203).

23721061 is a wasteful number, since it uses less digits than its factorization.

23721061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260691.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 23721061 is about 4870.4271886560. The cubic root of 23721061 is about 287.3280574909.

Adding to 23721061 its reverse (16012732), we get a palindrome (39733793).

The spelling of 23721061 in words is "twenty-three million, seven hundred twenty-one thousand, sixty-one".