23949505 has 16 divisors (see below), whose sum is σ = 29880000. Its totient is φ = 18406080.

The previous prime is 23949503. The next prime is 23949511. The reversal of 23949505 is 50594932.

It is not a de Polignac number, because 23949505 - 2¹ = 23949503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23949503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47746 + ... + 48244.

It is an arithmetic number, because the mean of its divisors is an integer number (1867500).

Almost surely, 2^23949505 is an apocalyptic number.

It is an amenable number.

23949505 is a deficient number, since it is larger than the sum of its proper divisors (5930495).

23949505 is a wasteful number, since it uses less digits than its factorization.

23949505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 23949505 is about 4893.8231476015. The cubic root of 23949505 is about 288.2474764881.

The spelling of 23949505 in words is "twenty-three million, nine hundred forty-nine thousand, five hundred five".