23693890 has 16 divisors (see below), whose sum is σ = 46526400. Its totient is φ = 8615920.

The previous prime is 23693881. The next prime is 23693897. The reversal of 23693890 is 9839632.

It is a super-2 number, since 2×23693890² = 1122800846664200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23693897) 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, 107590 + ... + 107809.

It is an arithmetic number, because the mean of its divisors is an integer number (2907900).

Almost surely, 2^23693890 is an apocalyptic number.

23693890 is a deficient number, since it is larger than the sum of its proper divisors (22832510).

23693890 is a wasteful number, since it uses less digits than its factorization.

23693890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215417.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 23693890 is about 4867.6370037216. The cubic root of 23693890 is about 287.2183101043.

The spelling of 23693890 in words is "twenty-three million, six hundred ninety-three thousand, eight hundred ninety".