244620405 has 20 divisors (see below), whose sum is σ = 438505452. Its totient is φ = 130464000.

The previous prime is 244620377. The next prime is 244620407. The reversal of 244620405 is 504026442.

It can be written as a sum of positive squares in 2 ways, for example, as 137311524 + 107308881 = 11718^2 + 10359^2 .

It is not a de Polignac number, because 244620405 - 2⁵ = 244620373 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244620407) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 301596 + ... + 302405.

Almost surely, 2^244620405 is an apocalyptic number.

It is an amenable number.

244620405 is a deficient number, since it is larger than the sum of its proper divisors (193885047).

244620405 is an equidigital number, since it uses as much as digits as its factorization.

244620405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604018 (or 604009 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 244620405 is about 15640.3454245742. The cubic root of 244620405 is about 625.4091443696.

Adding to 244620405 its reverse (504026442), we get a palindrome (748646847).

It can be divided in two parts, 244620 and 405, that added together give a square (245025 = 495²).

The spelling of 244620405 in words is "two hundred forty-four million, six hundred twenty thousand, four hundred five".