23499145 has 8 divisors (see below), whose sum is σ = 28343304. Its totient is φ = 18703104.

The previous prime is 23499139. The next prime is 23499149. The reversal of 23499145 is 54199432.

It can be written as a sum of positive squares in 4 ways, for example, as 2996361 + 20502784 = 1731^2 + 4528^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 23499145 - 2⁷ = 23499017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23499149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10944 + ... + 12913.

It is an arithmetic number, because the mean of its divisors is an integer number (3542913).

Almost surely, 2^23499145 is an apocalyptic number.

It is an amenable number.

23499145 is a deficient number, since it is larger than the sum of its proper divisors (4844159).

23499145 is a wasteful number, since it uses less digits than its factorization.

23499145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24059.

The product of its digits is 38880, while the sum is 37.

The square root of 23499145 is about 4847.5916700976. The cubic root of 23499145 is about 286.4292419985.

It can be divided in two parts, 23499 and 145, that multiplied together give a triangular number (3407355 = T₂₆₁₀).

The spelling of 23499145 in words is "twenty-three million, four hundred ninety-nine thousand, one hundred forty-five".