23130404 has 48 divisors (see below), whose sum is σ = 47355840. Its totient is φ = 9802880.

The previous prime is 23130397. The next prime is 23130409. The reversal of 23130404 is 40403132.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23130409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216119 + ... + 216225.

It is an arithmetic number, because the mean of its divisors is an integer number (986580).

Almost surely, 2^23130404 is an apocalyptic number.

It is an amenable number.

23130404 is an abundant number, since it is smaller than the sum of its proper divisors (24225436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23130404 is a wasteful number, since it uses less digits than its factorization.

23130404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 23130404 is about 4809.4078637604. The cubic root of 23130404 is about 284.9231515383.

Adding to 23130404 its reverse (40403132), we get a palindrome (63533536).

The spelling of 23130404 in words is "twenty-three million, one hundred thirty thousand, four hundred four".