15230729450 has 12 divisors (see below), whose sum is σ = 28329156870. Its totient is φ = 6092291760.

The previous prime is 15230729407. The next prime is 15230729453. The reversal of 15230729450 is 5492703251.

It can be written as a sum of positive squares in 3 ways, for example, as 10774232401 + 4456497049 = 103799^2 + 66757^2 .

It is not an unprimeable number, because it can be changed into a prime (15230729453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 152307245 + ... + 152307344.

Almost surely, 2^15230729450 is an apocalyptic number.

15230729450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15230729450 is a deficient number, since it is larger than the sum of its proper divisors (13098427420).

15230729450 is a wasteful number, since it uses less digits than its factorization.

15230729450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304614601 (or 304614596 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 15230729450 in words is "fifteen billion, two hundred thirty million, seven hundred twenty-nine thousand, four hundred fifty".