1244038069728 has 240 divisors, whose sum is σ = 3931726662864. Its totient is φ = 384460369920.

The previous prime is 1244038069727. The next prime is 1244038069733. The reversal of 1244038069728 is 8279608304421.

1244038069728 is a `hidden beast` number, since 12 + 440 + 3 + 80 + 6 + 97 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244038069723) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2741598 + ... + 3162978.

Almost surely, 2^{1244038069728} is an apocalyptic number.

1244038069728 is a gapful number since it is divisible by the number (18) 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 1244038069728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1965863331432).

1244038069728 is an abundant number, since it is smaller than the sum of its proper divisors (2687688593136).

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

1244038069728 is a wasteful number, since it uses less digits than its factorization.

1244038069728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421487 (or 421470 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 1244038069728 in words is "one trillion, two hundred forty-four billion, thirty-eight million, sixty-nine thousand, seven hundred twenty-eight".