23405706 has 16 divisors (see below), whose sum is σ = 52012800. Its totient is φ = 7801884.

The previous prime is 23405693. The next prime is 23405729. The reversal of 23405706 is 60750432.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 23405706.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216666 + ... + 216773.

It is an arithmetic number, because the mean of its divisors is an integer number (3250800).

Almost surely, 2^23405706 is an apocalyptic number.

23405706 is an abundant number, since it is smaller than the sum of its proper divisors (28607094).

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

23405706 is a wasteful number, since it uses less digits than its factorization.

23405706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433450 (or 433444 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 23405706 is about 4837.9443981923. The cubic root of 23405706 is about 286.0490974767.

The spelling of 23405706 in words is "twenty-three million, four hundred five thousand, seven hundred six".