15731874048 has 432 divisors, whose sum is σ = 48994254848. Its totient is φ = 4470681600.

The previous prime is 15731874043. The next prime is 15731874083. The reversal of 15731874048 is 84047813751.

It is a super-2 number, since 2×15731874048² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 15731873988 and 15731874006.

It is not an unprimeable number, because it can be changed into a prime (15731874043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123872961 + ... + 123873087.

Almost surely, 2^15731874048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15731874048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24497127424).

15731874048 is an abundant number, since it is smaller than the sum of its proper divisors (33262380800).

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

15731874048 is a wasteful number, since it uses less digits than its factorization.

15731874048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 48.

The spelling of 15731874048 in words is "fifteen billion, seven hundred thirty-one million, eight hundred seventy-four thousand, forty-eight".