15226315040 has 48 divisors (see below), whose sum is σ = 36343053432. Its totient is φ = 6027730944.

The previous prime is 15226315037. The next prime is 15226315051. The reversal of 15226315040 is 4051362251.

It can be written as a sum of positive squares in 4 ways, for example, as 7526603536 + 7699711504 = 86756^2 + 87748^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15226314994 and 15226315012.

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, 475019 + ... + 506058.

Almost surely, 2^15226315040 is an apocalyptic number.

15226315040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15226315040 is an abundant number, since it is smaller than the sum of its proper divisors (21116738392).

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

15226315040 is an equidigital number, since it uses as much as digits as its factorization.

15226315040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981189 (or 981181 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 15226315040 its reverse (4051362251), we get a palindrome (19277677291).

The spelling of 15226315040 in words is "fifteen billion, two hundred twenty-six million, three hundred fifteen thousand, forty".