1144305620 has 12 divisors (see below), whose sum is σ = 2403041844. Its totient is φ = 457722240.

The previous prime is 1144305619. The next prime is 1144305629. The reversal of 1144305620 is 265034411.

It can be written as a sum of positive squares in 2 ways, for example, as 489559876 + 654745744 = 22126^2 + 25588^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1144305620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144305629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28607621 + ... + 28607660.

It is an arithmetic number, because the mean of its divisors is an integer number (200253487).

Almost surely, 2^1144305620 is an apocalyptic number.

1144305620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1144305620 is an abundant number, since it is smaller than the sum of its proper divisors (1258736224).

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

1144305620 is a wasteful number, since it uses less digits than its factorization.

1144305620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57215290 (or 57215288 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1144305620 is about 33827.5866712362. The cubic root of 1144305620 is about 1045.9574323972.

The spelling of 1144305620 in words is "one billion, one hundred forty-four million, three hundred five thousand, six hundred twenty".