23690216 has 32 divisors (see below), whose sum is σ = 50133600. Its totient is φ = 10395840.

The previous prime is 23690203. The next prime is 23690221. The reversal of 23690216 is 61209632.

It is a super-2 number, since 2×23690216² = 1122452668253312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 2090 + ... + 7193.

It is an arithmetic number, because the mean of its divisors is an integer number (1566675).

Almost surely, 2^23690216 is an apocalyptic number.

It is an amenable number.

23690216 is an abundant number, since it is smaller than the sum of its proper divisors (26443384).

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

23690216 is a wasteful number, since it uses less digits than its factorization.

23690216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9329 (or 9325 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 23690216 is about 4867.2595985832. The cubic root of 23690216 is about 287.2034638771.

Adding to 23690216 its reverse (61209632), we get a palindrome (84899848).

The spelling of 23690216 in words is "twenty-three million, six hundred ninety thousand, two hundred sixteen".