1240378650 has 288 divisors, whose sum is σ = 4213658880. Its totient is φ = 266595840.

The previous prime is 1240378649. The next prime is 1240378669. The reversal of 1240378650 is 568730421.

It is an unprimeable number.

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 143 ways as a sum of consecutive naturals, for example, 1123999 + ... + 1125101.

It is an arithmetic number, because the mean of its divisors is an integer number (14630760).

Almost surely, 2^1240378650 is an apocalyptic number.

1240378650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1240378650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2106829440).

1240378650 is an abundant number, since it is smaller than the sum of its proper divisors (2973280230).

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

1240378650 is a wasteful number, since it uses less digits than its factorization.

1240378650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155 (or 1137 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1240378650 is about 35219.0097816506. The cubic root of 1240378650 is about 1074.4464140890.

The spelling of 1240378650 in words is "one billion, two hundred forty million, three hundred seventy-eight thousand, six hundred fifty".