15448971240 has 160 divisors (see below), whose sum is σ = 52020571680. Its totient is φ = 4112201088.

The previous prime is 15448971227. The next prime is 15448971277. The reversal of 15448971240 is 4217984451.

15448971240 is a `hidden beast` number, since 1 + 544 + 8 + 97 + 12 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1897819 + ... + 1905941.

It is an arithmetic number, because the mean of its divisors is an integer number (325128573).

Almost surely, 2^15448971240 is an apocalyptic number.

15448971240 is a gapful number since it is divisible by the number (10) 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 15448971240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26010285840).

15448971240 is an abundant number, since it is smaller than the sum of its proper divisors (36571600440).

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

15448971240 is a wasteful number, since it uses less digits than its factorization.

15448971240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8733 (or 8720 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 15448971240 in words is "fifteen billion, four hundred forty-eight million, nine hundred seventy-one thousand, two hundred forty".