23498478 has 64 divisors (see below), whose sum is σ = 56544000. Its totient is φ = 7208352.

The previous prime is 23498473. The next prime is 23498491. The reversal of 23498478 is 87489432.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23498473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37653 + ... + 38271.

It is an arithmetic number, because the mean of its divisors is an integer number (883500).

Almost surely, 2^23498478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23498478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28272000).

23498478 is an abundant number, since it is smaller than the sum of its proper divisors (33045522).

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

23498478 is a wasteful number, since it uses less digits than its factorization.

23498478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686 (or 680 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 23498478 is about 4847.5228725608. The cubic root of 23498478 is about 286.4265319693.

It can be divided in two parts, 23 and 498478, that added together give a triangular number (498501 = T₉₉₈).

The spelling of 23498478 in words is "twenty-three million, four hundred ninety-eight thousand, four hundred seventy-eight".