23138488 has 8 divisors (see below), whose sum is σ = 43384680. Its totient is φ = 11569240.

The previous prime is 23138461. The next prime is 23138501. The reversal of 23138488 is 88483132.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×23138488² = 1070779253852288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1446148 + ... + 1446163.

It is an arithmetic number, because the mean of its divisors is an integer number (5423085).

Almost surely, 2^23138488 is an apocalyptic number.

It is an amenable number.

23138488 is a deficient number, since it is larger than the sum of its proper divisors (20246192).

23138488 is a wasteful number, since it uses less digits than its factorization.

23138488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2892317 (or 2892313 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 23138488 is about 4810.2482264432. The cubic root of 23138488 is about 284.9563409063.

It can be divided in two parts, 2313 and 8488, that added together give a palindrome (10801).

The spelling of 23138488 in words is "twenty-three million, one hundred thirty-eight thousand, four hundred eighty-eight".