1387272722 has 16 divisors (see below), whose sum is σ = 2270719872. Its totient is φ = 630401520.

The previous prime is 1387272697. The next prime is 1387272737. The reversal of 1387272722 is 2272727831.

It is a super-3 number, since 3×1387272722³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1387272722.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102368 + ... + 115124.

It is an arithmetic number, because the mean of its divisors is an integer number (141919992).

Almost surely, 2^1387272722 is an apocalyptic number.

1387272722 is a deficient number, since it is larger than the sum of its proper divisors (883447150).

1387272722 is a wasteful number, since it uses less digits than its factorization.

1387272722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17713.

The product of its digits is 131712, while the sum is 41.

The square root of 1387272722 is about 37246.1101593173. The cubic root of 1387272722 is about 1115.2886493530.

The spelling of 1387272722 in words is "one billion, three hundred eighty-seven million, two hundred seventy-two thousand, seven hundred twenty-two".