1624426240 has 72 divisors (see below), whose sum is σ = 3900835008. Its totient is φ = 648130560.

The previous prime is 1624426229. The next prime is 1624426247. The reversal of 1624426240 is 426244261.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1624426247) 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 7 ways as a sum of consecutive naturals, for example, 591270 + ... + 594010.

It is an arithmetic number, because the mean of its divisors is an integer number (54178264).

Almost surely, 2^1624426240 is an apocalyptic number.

1624426240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1624426240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1950417504).

1624426240 is an abundant number, since it is smaller than the sum of its proper divisors (2276408768).

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

1624426240 is an equidigital number, since it uses as much as digits as its factorization.

1624426240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225 (or 3211 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 1624426240 is about 40304.1714962608. The cubic root of 1624426240 is about 1175.5289581575.

The spelling of 1624426240 in words is "one billion, six hundred twenty-four million, four hundred twenty-six thousand, two hundred forty".