626026440 has 128 divisors (see below), whose sum is σ = 2129097600. Its totient is φ = 145981440.

The previous prime is 626026433. The next prime is 626026447. The reversal of 626026440 is 44620626.

It is an interprime number because it is at equal distance from previous prime (626026433) and next prime (626026447).

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 = 626026398 and 626026407.

It is not an unprimeable number, because it can be changed into a prime (626026447) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 19080 + ... + 40200.

It is an arithmetic number, because the mean of its divisors is an integer number (16633575).

Almost surely, 2^626026440 is an apocalyptic number.

626026440 is a gapful number since it is divisible by the number (60) 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 626026440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1064548800).

626026440 is an abundant number, since it is smaller than the sum of its proper divisors (1503071160).

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

626026440 is a wasteful number, since it uses less digits than its factorization.

626026440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21167 (or 21163 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 626026440 is about 25020.5203782815. The cubic root of 626026440 is about 855.4557674012.

The spelling of 626026440 in words is "six hundred twenty-six million, twenty-six thousand, four hundred forty".