23402661 has 16 divisors (see below), whose sum is σ = 34275840. Its totient is φ = 14137200.

The previous prime is 23402647. The next prime is 23402689. The reversal of 23402661 is 16620432.

It is a de Polignac number, because none of the positive numbers 2^k-23402661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23402161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7615 + ... + 10236.

It is an arithmetic number, because the mean of its divisors is an integer number (2142240).

Almost surely, 2^23402661 is an apocalyptic number.

It is an amenable number.

23402661 is a deficient number, since it is larger than the sum of its proper divisors (10873179).

23402661 is a wasteful number, since it uses less digits than its factorization.

23402661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17896.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 23402661 is about 4837.6296881841. The cubic root of 23402661 is about 286.0366922784.

The spelling of 23402661 in words is "twenty-three million, four hundred two thousand, six hundred sixty-one".