23432409 has 120 divisors (see below), whose sum is σ = 49925568. Its totient is φ = 10575360.

The previous prime is 23432401. The next prime is 23432411. The reversal of 23432409 is 90423432.

It is a happy number.

It is not a de Polignac number, because 23432409 - 2³ = 23432401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (23432401) 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 119 ways as a sum of consecutive naturals, for example, 1378369 + ... + 1378385.

Almost surely, 2^23432409 is an apocalyptic number.

It is an amenable number.

23432409 is an abundant number, since it is smaller than the sum of its proper divisors (26493159).

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

23432409 is a wasteful number, since it uses less digits than its factorization.

23432409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 23432409 is about 4840.7033579843. The cubic root of 23432409 is about 286.1578382838.

The spelling of 23432409 in words is "twenty-three million, four hundred thirty-two thousand, four hundred nine".