1240304644 has 12 divisors (see below), whose sum is σ = 2192024268. Its totient is φ = 614012000.

The previous prime is 1240304627. The next prime is 1240304651. The reversal of 1240304644 is 4464030421.

It can be written as a sum of positive squares in 2 ways, for example, as 963481600 + 276823044 = 31040^2 + 16638^2 .

It is an unprimeable number.

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, 1534627 + ... + 1535434.

It is an arithmetic number, because the mean of its divisors is an integer number (182668689).

Almost surely, 2^1240304644 is an apocalyptic number.

It is an amenable number.

1240304644 is a deficient number, since it is larger than the sum of its proper divisors (951719624).

1240304644 is a wasteful number, since it uses less digits than its factorization.

1240304644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3070166 (or 3070164 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 1240304644 is about 35217.9591117941. The cubic root of 1240304644 is about 1074.4250450598.

The spelling of 1240304644 in words is "one billion, two hundred forty million, three hundred four thousand, six hundred forty-four".