23148905 has 8 divisors (see below), whose sum is σ = 29915592. Its totient is φ = 17094528.

The previous prime is 23148901. The next prime is 23148907. The reversal of 23148905 is 50984132.

It can be written as a sum of positive squares in 4 ways, for example, as 2835856 + 20313049 = 1684^2 + 4507^2 .

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 23148905 - 2² = 23148901 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23148901) 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, 178004 + ... + 178133.

It is an arithmetic number, because the mean of its divisors is an integer number (3739449).

Almost surely, 2^23148905 is an apocalyptic number.

It is an amenable number.

23148905 is a deficient number, since it is larger than the sum of its proper divisors (6766687).

23148905 is a wasteful number, since it uses less digits than its factorization.

23148905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356155.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 23148905 is about 4811.3308969556. The cubic root of 23148905 is about 284.9990971552. Note that the first 3 decimals are identical.

The spelling of 23148905 in words is "twenty-three million, one hundred forty-eight thousand, nine hundred five".