622309440 has 56 divisors (see below), whose sum is σ = 1975835520. Its totient is φ = 165948928.

The previous prime is 622309433. The next prime is 622309481. The reversal of 622309440 is 44903226.

It is a super-2 number, since 2×622309440² = 774538078226227200, which contains 22 as substring.

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 = 622309398 and 622309407.

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, 323160 + ... + 325079.

Almost surely, 2^622309440 is an apocalyptic number.

622309440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

622309440 is an abundant number, since it is smaller than the sum of its proper divisors (1353526080).

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

622309440 is a wasteful number, since it uses less digits than its factorization.

622309440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648259 (or 648249 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 622309440 is about 24946.1307621042. The cubic root of 622309440 is about 853.7593304860.

The spelling of 622309440 in words is "six hundred twenty-two million, three hundred nine thousand, four hundred forty".