1144236740 has 12 divisors (see below), whose sum is σ = 2402897196. Its totient is φ = 457694688.

The previous prime is 1144236721. The next prime is 1144236749. The reversal of 1144236740 is 476324411.

It can be written as a sum of positive squares in 2 ways, for example, as 586899076 + 557337664 = 24226^2 + 23608^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1144236697 and 1144236706.

It is not an unprimeable number, because it can be changed into a prime (1144236749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28605899 + ... + 28605938.

It is an arithmetic number, because the mean of its divisors is an integer number (200241433).

Almost surely, 2^1144236740 is an apocalyptic number.

1144236740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1144236740 is an abundant number, since it is smaller than the sum of its proper divisors (1258660456).

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

1144236740 is a wasteful number, since it uses less digits than its factorization.

1144236740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57211846 (or 57211844 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 1144236740 is about 33826.5685519534. The cubic root of 1144236740 is about 1045.9364452902.

The spelling of 1144236740 in words is "one billion, one hundred forty-four million, two hundred thirty-six thousand, seven hundred forty".