1387223376 has 240 divisors, whose sum is σ = 4551792000. Its totient is φ = 356336640.

The previous prime is 1387223359. The next prime is 1387223389. The reversal of 1387223376 is 6733227831.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6057630 + ... + 6057858.

It is an arithmetic number, because the mean of its divisors is an integer number (18965800).

Almost surely, 2^1387223376 is an apocalyptic number.

1387223376 is a gapful number since it is divisible by the number (16) 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 1387223376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2275896000).

1387223376 is an abundant number, since it is smaller than the sum of its proper divisors (3164568624).

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

1387223376 is a wasteful number, since it uses less digits than its factorization.

1387223376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 401 counting only the distinct ones).

The product of its digits is 254016, while the sum is 42.

The square root of 1387223376 is about 37245.4477218358. The cubic root of 1387223376 is about 1115.2754254004.

The spelling of 1387223376 in words is "one billion, three hundred eighty-seven million, two hundred twenty-three thousand, three hundred seventy-six".