622449040 has 40 divisors (see below), whose sum is σ = 1497102840. Its totient is φ = 240393216.

The previous prime is 622449019. The next prime is 622449041. The reversal of 622449040 is 40944226.

It can be written as a sum of positive squares in 4 ways, for example, as 164660224 + 457788816 = 12832^2 + 21396^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 622448993 and 622449011.

It is not an unprimeable number, because it can be changed into a prime (622449041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131829 + ... + 136468.

It is an arithmetic number, because the mean of its divisors is an integer number (37427571).

Almost surely, 2^622449040 is an apocalyptic number.

It is an amenable number.

622449040 is an abundant number, since it is smaller than the sum of its proper divisors (874653800).

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

622449040 is a wasteful number, since it uses less digits than its factorization.

622449040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268339 (or 268333 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 622449040 is about 24948.9286343121. The cubic root of 622449040 is about 853.8231657658.

The spelling of 622449040 in words is "six hundred twenty-two million, four hundred forty-nine thousand, forty".