23464509 has 16 divisors (see below), whose sum is σ = 32572800. Its totient is φ = 15006656.

The previous prime is 23464499. The next prime is 23464523. The reversal of 23464509 is 90546432.

23464509 = 68² + 69² + ... + 413².

It is a cyclic number.

It is not a de Polignac number, because 23464509 - 2¹⁷ = 23333437 is a prime.

It is a super-2 number, since 2×23464509² = 1101166365222162, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23464509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23464559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14272 + ... + 15830.

It is an arithmetic number, because the mean of its divisors is an integer number (2035800).

Almost surely, 2^23464509 is an apocalyptic number.

23464509 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

23464509 is a deficient number, since it is larger than the sum of its proper divisors (9108291).

23464509 is a wasteful number, since it uses less digits than its factorization.

23464509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 23464509 is about 4844.0178571099. The cubic root of 23464509 is about 286.2884476366.

The spelling of 23464509 in words is "twenty-three million, four hundred sixty-four thousand, five hundred nine".