23040394 has 16 divisors (see below), whose sum is σ = 37313640. Its totient is φ = 10607040.

The previous prime is 23040349. The next prime is 23040403. The reversal of 23040394 is 49304032.

It can be written as a sum of positive squares in 4 ways, for example, as 11309769 + 11730625 = 3363^2 + 3425^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12364 + ... + 14104.

Almost surely, 2^23040394 is an apocalyptic number.

23040394 is a deficient number, since it is larger than the sum of its proper divisors (14273246).

23040394 is a wasteful number, since it uses less digits than its factorization.

23040394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 23040394 is about 4800.0410414912. The cubic root of 23040394 is about 284.5530863592.

The spelling of 23040394 in words is "twenty-three million, forty thousand, three hundred ninety-four".