1390227238756 has 24 divisors (see below), whose sum is σ = 2580770933496. Its totient is φ = 653015278080.

The previous prime is 1390227238747. The next prime is 1390227238759. The reversal of 1390227238756 is 6578327220931.

It can be written as a sum of positive squares in 4 ways, for example, as 267220760356 + 1123006478400 = 516934^2 + 1059720^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1390227238697 and 1390227238706.

It is not an unprimeable number, because it can be changed into a prime (1390227238759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18858331 + ... + 18931906.

It is an arithmetic number, because the mean of its divisors is an integer number (107532122229).

Almost surely, 2^{1390227238756} is an apocalyptic number.

It is an amenable number.

1390227238756 is a deficient number, since it is larger than the sum of its proper divisors (1190543694740).

1390227238756 is a wasteful number, since it uses less digits than its factorization.

1390227238756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37790799 (or 37790797 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 1390227238756 in words is "one trillion, three hundred ninety billion, two hundred twenty-seven million, two hundred thirty-eight thousand, seven hundred fifty-six".