23154493 has 8 divisors (see below), whose sum is σ = 24661368. Its totient is φ = 21663744.

The previous prime is 23154457. The next prime is 23154497. The reversal of 23154493 is 39445132.

It can be written as a sum of positive squares in 4 ways, for example, as 4853209 + 18301284 = 2203^2 + 4278^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23154493 - 2⁹ = 23153981 is a prime.

It is a super-2 number, since 2×23154493² = 1072261092174098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23154497) 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, 996 + ... + 6877.

It is an arithmetic number, because the mean of its divisors is an integer number (3082671).

Almost surely, 2^23154493 is an apocalyptic number.

It is an amenable number.

23154493 is a deficient number, since it is larger than the sum of its proper divisors (1506875).

23154493 is a wasteful number, since it uses less digits than its factorization.

23154493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8063.

The product of its digits is 12960, while the sum is 31.

The square root of 23154493 is about 4811.9115744161. The cubic root of 23154493 is about 285.0220276398.

The spelling of 23154493 in words is "twenty-three million, one hundred fifty-four thousand, four hundred ninety-three".