1387632652 has 12 divisors (see below), whose sum is σ = 2775265360. Its totient is φ = 594699696.

The previous prime is 1387632647. The next prime is 1387632671. The reversal of 1387632652 is 2562367831.

1387632652 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1387632599 and 1387632608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24779127 + ... + 24779182.

Almost surely, 2^1387632652 is an apocalyptic number.

It is an amenable number.

1387632652 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1387632652 is a wasteful number, since it uses less digits than its factorization.

1387632652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49558320 (or 49558318 counting only the distinct ones).

The product of its digits is 362880, while the sum is 43.

The square root of 1387632652 is about 37250.9416256824. The cubic root of 1387632652 is about 1115.3850954532.

The spelling of 1387632652 in words is "one billion, three hundred eighty-seven million, six hundred thirty-two thousand, six hundred fifty-two".