23407155 has 24 divisors (see below), whose sum is σ = 40856400. Its totient is φ = 12396480.

The previous prime is 23407151. The next prime is 23407157. The reversal of 23407155 is 55170432.

It is a happy number.

It is not a de Polignac number, because 23407155 - 2² = 23407151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23407151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4960 + ... + 8450.

It is an arithmetic number, because the mean of its divisors is an integer number (1702350).

Almost surely, 2^23407155 is an apocalyptic number.

23407155 is a deficient number, since it is larger than the sum of its proper divisors (17449245).

23407155 is a wasteful number, since it uses less digits than its factorization.

23407155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3651 (or 3648 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 23407155 is about 4838.0941495593. The cubic root of 23407155 is about 286.0550002623.

Adding to 23407155 its reverse (55170432), we get a palindrome (78577587).

The spelling of 23407155 in words is "twenty-three million, four hundred seven thousand, one hundred fifty-five".