23421519 has 24 divisors (see below), whose sum is σ = 37065600. Its totient is φ = 14133840.

The previous prime is 23421511. The next prime is 23421533. The reversal of 23421519 is 91512432.

It is not a de Polignac number, because 23421519 - 2³ = 23421511 is a prime.

It is a super-2 number, since 2×23421519² = 1097135104534722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23421492 and 23421501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23421511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35212 + ... + 35870.

It is an arithmetic number, because the mean of its divisors is an integer number (1544400).

Almost surely, 2^23421519 is an apocalyptic number.

23421519 is a deficient number, since it is larger than the sum of its proper divisors (13644081).

23421519 is a wasteful number, since it uses less digits than its factorization.

23421519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035 (or 1032 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 23421519 is about 4839.5783907279. The cubic root of 23421519 is about 286.1135016596.

The spelling of 23421519 in words is "twenty-three million, four hundred twenty-one thousand, five hundred nineteen".