1202644040 has 64 divisors (see below), whose sum is σ = 2919188160. Its totient is φ = 443278080.

The previous prime is 1202644031. The next prime is 1202644043. The reversal of 1202644040 is 404462021.

It is a junction number, because it is equal to n+sod(n) for n = 1202643997 and 1202644015.

It is not an unprimeable number, because it can be changed into a prime (1202644043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357647 + ... + 360993.

It is an arithmetic number, because the mean of its divisors is an integer number (45612315).

Almost surely, 2^1202644040 is an apocalyptic number.

1202644040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1202644040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1459594080).

1202644040 is an abundant number, since it is smaller than the sum of its proper divisors (1716544120).

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

1202644040 is a wasteful number, since it uses less digits than its factorization.

1202644040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4062 (or 4058 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1202644040 is about 34679.1585826415. The cubic root of 1202644040 is about 1063.4384721485.

The spelling of 1202644040 in words is "one billion, two hundred two million, six hundred forty-four thousand, forty".