1415928780 has 144 divisors (see below), whose sum is σ = 4934092800. Its totient is φ = 321957504.

The previous prime is 1415928763. The next prime is 1415928781. The reversal of 1415928780 is 878295141.

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

It is not an unprimeable number, because it can be changed into a prime (1415928781) 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, 247917 + ... + 253563.

Almost surely, 2^1415928780 is an apocalyptic number.

1415928780 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 1415928780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2467046400).

1415928780 is an abundant number, since it is smaller than the sum of its proper divisors (3518164020).

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

1415928780 is a wasteful number, since it uses less digits than its factorization.

1415928780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5868 (or 5863 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 1415928780 is about 37628.8291074809. The cubic root of 1415928780 is about 1122.9156546854.

The spelling of 1415928780 in words is "one billion, four hundred fifteen million, nine hundred twenty-eight thousand, seven hundred eighty".