23620145 has 8 divisors (see below), whose sum is σ = 28402920. Its totient is φ = 18856960.

The previous prime is 23620127. The next prime is 23620153. The reversal of 23620145 is 54102632.

It can be written as a sum of positive squares in 4 ways, for example, as 10195249 + 13424896 = 3193^2 + 3664^2 .

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

It is not a de Polignac number, because 23620145 - 2⁶ = 23620081 is a prime.

It is a super-2 number, since 2×23620145² = 1115822499642050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23620145.

It is an unprimeable number.

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, 2096 + ... + 7185.

It is an arithmetic number, because the mean of its divisors is an integer number (3550365).

Almost surely, 2^23620145 is an apocalyptic number.

It is an amenable number.

23620145 is a deficient number, since it is larger than the sum of its proper divisors (4782775).

23620145 is an equidigital number, since it uses as much as digits as its factorization.

23620145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9795.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 23620145 is about 4860.0560696354. The cubic root of 23620145 is about 286.9200204483.

Adding to 23620145 its reverse (54102632), we get a palindrome (77722777).

The spelling of 23620145 in words is "twenty-three million, six hundred twenty thousand, one hundred forty-five".