15280668040 has 64 divisors (see below), whose sum is σ = 37573398720. Its totient is φ = 5546784000.

The previous prime is 15280668017. The next prime is 15280668049. The reversal of 15280668040 is 4086608251.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 15280667984 and 15280668002.

It is not an unprimeable number, because it can be changed into a prime (15280668049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220830 + ... + 281650.

It is an arithmetic number, because the mean of its divisors is an integer number (587084355).

Almost surely, 2^15280668040 is an apocalyptic number.

15280668040 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 15280668040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18786699360).

15280668040 is an abundant number, since it is smaller than the sum of its proper divisors (22292730680).

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

15280668040 is a wasteful number, since it uses less digits than its factorization.

15280668040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61414 (or 61410 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 15280668040 in words is "fifteen billion, two hundred eighty million, six hundred sixty-eight thousand, forty".