622405140 has 48 divisors (see below), whose sum is σ = 1991697792. Its totient is φ = 142263936.

The previous prime is 622405123. The next prime is 622405141. The reversal of 622405140 is 41504226.

It is a super-3 number, since 3×622405140³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 622405140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622405141) 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 15 ways as a sum of consecutive naturals, for example, 740539 + ... + 741378.

It is an arithmetic number, because the mean of its divisors is an integer number (41493704).

Almost surely, 2^622405140 is an apocalyptic number.

622405140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

622405140 is an abundant number, since it is smaller than the sum of its proper divisors (1369292652).

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

622405140 is a wasteful number, since it uses less digits than its factorization.

622405140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481936 (or 1481934 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 622405140 is about 24948.0488215011. The cubic root of 622405140 is about 853.8030925197.

Adding to 622405140 its reverse (41504226), we get a palindrome (663909366).

The spelling of 622405140 in words is "six hundred twenty-two million, four hundred five thousand, one hundred forty".