1240764738 has 16 divisors (see below), whose sum is σ = 2482942656. Its totient is φ = 413352720.

The previous prime is 1240764719. The next prime is 1240764751. The reversal of 1240764738 is 8374670421.

It is a self number, because there is not a number n which added to its sum of digits gives 1240764738.

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 7 ways as a sum of consecutive naturals, for example, 47293 + ... + 68688.

It is an arithmetic number, because the mean of its divisors is an integer number (155183916).

Almost surely, 2^1240764738 is an apocalyptic number.

1240764738 is an abundant number, since it is smaller than the sum of its proper divisors (1242177918).

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

1240764738 is a wasteful number, since it uses less digits than its factorization.

1240764738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117769.

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 1240764738 is about 35224.4905995814. The cubic root of 1240764738 is about 1074.5578821566.

The spelling of 1240764738 in words is "one billion, two hundred forty million, seven hundred sixty-four thousand, seven hundred thirty-eight".