23158154 has 4 divisors (see below), whose sum is σ = 34737234. Its totient is φ = 11579076.

The previous prime is 23158133. The next prime is 23158159. The reversal of 23158154 is 45185132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22705225 + 452929 = 4765^2 + 673^2 .

It is not an unprimeable number, because it can be changed into a prime (23158159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5789537 + ... + 5789540.

Almost surely, 2^23158154 is an apocalyptic number.

23158154 is a deficient number, since it is larger than the sum of its proper divisors (11579080).

23158154 is a wasteful number, since it uses less digits than its factorization.

23158154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11579079.

The product of its digits is 4800, while the sum is 29.

The square root of 23158154 is about 4812.2919695297. The cubic root of 23158154 is about 285.0370486360.

It can be divided in two parts, 231 and 58154, that added together give a palindrome (58385).

The spelling of 23158154 in words is "twenty-three million, one hundred fifty-eight thousand, one hundred fifty-four".