23404019 has 8 divisors (see below), whose sum is σ = 25121520. Its totient is φ = 21724416.

The previous prime is 23404009. The next prime is 23404021. The reversal of 23404019 is 91040432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23404019 is a prime.

It is a super-2 number, since 2×23404019² = 1095496210704722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23403985 and 23404003.

It is not an unprimeable number, because it can be changed into a prime (23404009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8189 + ... + 10670.

It is an arithmetic number, because the mean of its divisors is an integer number (3140190).

Almost surely, 2^23404019 is an apocalyptic number.

23404019 is a deficient number, since it is larger than the sum of its proper divisors (1717501).

23404019 is a wasteful number, since it uses less digits than its factorization.

23404019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18949.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 23404019 is about 4837.7700441422. The cubic root of 23404019 is about 286.0422248446.

The spelling of 23404019 in words is "twenty-three million, four hundred four thousand, nineteen".