23381477 has 12 divisors (see below), whose sum is σ = 28799820. Its totient is φ = 18861696.

The previous prime is 23381473. The next prime is 23381497. The reversal of 23381477 is 77418332.

It can be written as a sum of positive squares in 2 ways, for example, as 10233601 + 13147876 = 3199^2 + 3626^2 .

It is not a de Polignac number, because 23381477 - 2² = 23381473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23381473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13202 + ... + 14867.

It is an arithmetic number, because the mean of its divisors is an integer number (2399985).

Almost surely, 2^23381477 is an apocalyptic number.

It is an amenable number.

23381477 is a deficient number, since it is larger than the sum of its proper divisors (5418343).

23381477 is a wasteful number, since it uses less digits than its factorization.

23381477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28100 (or 28093 counting only the distinct ones).

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

The square root of 23381477 is about 4835.4396904522. The cubic root of 23381477 is about 285.9503597808.

The spelling of 23381477 in words is "twenty-three million, three hundred eighty-one thousand, four hundred seventy-seven".