1240947764 has 12 divisors (see below), whose sum is σ = 2481895584. Its totient is φ = 531834744.

The previous prime is 1240947739. The next prime is 1240947769. The reversal of 1240947764 is 4677490421.

1240947764 is an admirable number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240947769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22159754 + ... + 22159809.

It is an arithmetic number, because the mean of its divisors is an integer number (206824632).

Almost surely, 2^1240947764 is an apocalyptic number.

1240947764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1240947764 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1240947764 is a wasteful number, since it uses less digits than its factorization.

1240947764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44319574 (or 44319572 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 1240947764 is about 35227.0884973482. The cubic root of 1240947764 is about 1074.6107157989.

The spelling of 1240947764 in words is "one billion, two hundred forty million, nine hundred forty-seven thousand, seven hundred sixty-four".