1240690752 has 84 divisors (see below), whose sum is σ = 4064260096. Its totient is φ = 354481920.

The previous prime is 1240690751. The next prime is 1240690757. The reversal of 1240690752 is 2570960421.

It is a tau number, because it is divible by the number of its divisors (84).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1240690751) 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 11 ways as a sum of consecutive naturals, for example, 149824 + ... + 157887.

Almost surely, 2^1240690752 is an apocalyptic number.

1240690752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1240690752 is an abundant number, since it is smaller than the sum of its proper divisors (2823569344).

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

1240690752 is a wasteful number, since it uses less digits than its factorization.

1240690752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307736 (or 307723 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1240690752 is about 35223.4403771125. The cubic root of 1240690752 is about 1074.5365233345.

The spelling of 1240690752 in words is "one billion, two hundred forty million, six hundred ninety thousand, seven hundred fifty-two".