622741440 has 56 divisors (see below), whose sum is σ = 1977207120. Its totient is φ = 166064128.

The previous prime is 622741421. The next prime is 622741451. The reversal of 622741440 is 44147226.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 622741398 and 622741407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323385 + ... + 325304.

It is an arithmetic number, because the mean of its divisors is an integer number (35307270).

Almost surely, 2^622741440 is an apocalyptic number.

622741440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

622741440 is an abundant number, since it is smaller than the sum of its proper divisors (1354465680).

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

622741440 is a wasteful number, since it uses less digits than its factorization.

622741440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648709 (or 648699 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 622741440 is about 24954.7879173517. The cubic root of 622741440 is about 853.9568414002.

Adding to 622741440 its reverse (44147226), we get a palindrome (666888666).

The spelling of 622741440 in words is "six hundred twenty-two million, seven hundred forty-one thousand, four hundred forty".