23138477 has 8 divisors (see below), whose sum is σ = 23491776. Its totient is φ = 22787712.

The previous prime is 23138461. The next prime is 23138501. The reversal of 23138477 is 77483132.

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 23138477 - 2⁴ = 23138461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23138407) 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, 25058 + ... + 25964.

It is an arithmetic number, because the mean of its divisors is an integer number (2936472).

Almost surely, 2^23138477 is an apocalyptic number.

It is an amenable number.

23138477 is a deficient number, since it is larger than the sum of its proper divisors (353299).

23138477 is an equidigital number, since it uses as much as digits as its factorization.

23138477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267.

The product of its digits is 28224, while the sum is 35.

The square root of 23138477 is about 4810.2470830509. The cubic root of 23138477 is about 284.9562957504.

The spelling of 23138477 in words is "twenty-three million, one hundred thirty-eight thousand, four hundred seventy-seven".