1445122780 has 48 divisors (see below), whose sum is σ = 3143448000. Its totient is φ = 557398016.

The previous prime is 1445122709. The next prime is 1445122787. The reversal of 1445122780 is 872215441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445122787) 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, 764076 + ... + 765964.

It is an arithmetic number, because the mean of its divisors is an integer number (65488500).

Almost surely, 2^1445122780 is an apocalyptic number.

1445122780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445122780 is an abundant number, since it is smaller than the sum of its proper divisors (1698325220).

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

1445122780 is a wasteful number, since it uses less digits than its factorization.

1445122780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3246 (or 3244 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 1445122780 is about 38014.7705504058. The cubic root of 1445122780 is about 1130.5807388991.

The spelling of 1445122780 in words is "one billion, four hundred forty-five million, one hundred twenty-two thousand, seven hundred eighty".