622431240 has 32 divisors (see below), whose sum is σ = 1867294080. Its totient is φ = 165981632.

The previous prime is 622431197. The next prime is 622431253. The reversal of 622431240 is 42134226.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 622431240.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2593344 + ... + 2593583.

It is an arithmetic number, because the mean of its divisors is an integer number (58352940).

Almost surely, 2^622431240 is an apocalyptic number.

622431240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

622431240 is an abundant number, since it is smaller than the sum of its proper divisors (1244862840).

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

622431240 is a wasteful number, since it uses less digits than its factorization.

622431240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5186941 (or 5186937 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 622431240 is about 24948.5719030168. The cubic root of 622431240 is about 853.8150268413.

Adding to 622431240 its reverse (42134226), we get a palindrome (664565466).

The spelling of 622431240 in words is "six hundred twenty-two million, four hundred thirty-one thousand, two hundred forty".