23478398 has 4 divisors (see below), whose sum is σ = 35217600. Its totient is φ = 11739198.

The previous prime is 23478397. The next prime is 23478419. The reversal of 23478398 is 89387432.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23478397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5869598 + ... + 5869601.

It is an arithmetic number, because the mean of its divisors is an integer number (8804400).

Almost surely, 2^23478398 is an apocalyptic number.

23478398 is a deficient number, since it is larger than the sum of its proper divisors (11739202).

23478398 is a wasteful number, since it uses less digits than its factorization.

23478398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11739201.

The product of its digits is 290304, while the sum is 44.

The square root of 23478398 is about 4845.4512689738. The cubic root of 23478398 is about 286.3449226584.

The spelling of 23478398 in words is "twenty-three million, four hundred seventy-eight thousand, three hundred ninety-eight".