626231240 has 16 divisors (see below), whose sum is σ = 1409020380. Its totient is φ = 250492480.

The previous prime is 626231239. The next prime is 626231267. The reversal of 626231240 is 42132626.

It can be written as a sum of positive squares in 2 ways, for example, as 622302916 + 3928324 = 24946^2 + 1982^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7827851 + ... + 7827930.

Almost surely, 2^626231240 is an apocalyptic number.

It is an amenable number.

626231240 is an abundant number, since it is smaller than the sum of its proper divisors (782789140).

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

626231240 is a wasteful number, since it uses less digits than its factorization.

626231240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15655792 (or 15655788 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 626231240 is about 25024.6126843154. The cubic root of 626231240 is about 855.5490426095.

Adding to 626231240 its reverse (42132626), we get a palindrome (668363866).

The spelling of 626231240 in words is "six hundred twenty-six million, two hundred thirty-one thousand, two hundred forty".