1387823232 has 256 divisors, whose sum is σ = 4102358400. Its totient is φ = 414056448.

The previous prime is 1387823231. The next prime is 1387823233. The reversal of 1387823232 is 2323287831.

It is an interprime number because it is at equal distance from previous prime (1387823231) and next prime (1387823233).

It is not an unprimeable number, because it can be changed into a prime (1387823231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14307408 + ... + 14307504.

Almost surely, 2^1387823232 is an apocalyptic number.

1387823232 is a gapful number since it is divisible by the number (12) 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 1387823232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2051179200).

1387823232 is an abundant number, since it is smaller than the sum of its proper divisors (2714535168).

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

1387823232 is a wasteful number, since it uses less digits than its factorization.

1387823232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 211 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 1387823232 is about 37253.4995939979. The cubic root of 1387823232 is about 1115.4361561236.

The spelling of 1387823232 in words is "one billion, three hundred eighty-seven million, eight hundred twenty-three thousand, two hundred thirty-two".