23409770 has 16 divisors (see below), whose sum is σ = 43166088. Its totient is φ = 9135360.

The previous prime is 23409769. The next prime is 23409779. The reversal of 23409770 is 7790432.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5508409 + 17901361 = 2347^2 + 4231^2 .

It is not an unprimeable number, because it can be changed into a prime (23409779) 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, 28139 + ... + 28958.

Almost surely, 2^23409770 is an apocalyptic number.

23409770 is a deficient number, since it is larger than the sum of its proper divisors (19756318).

23409770 is a wasteful number, since it uses less digits than its factorization.

23409770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57145.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 23409770 is about 4838.3643930568. The cubic root of 23409770 is about 286.0656523609.

The spelling of 23409770 in words is "twenty-three million, four hundred nine thousand, seven hundred seventy".