1387452132 has 48 divisors (see below), whose sum is σ = 3924110400. Its totient is φ = 420439680.

The previous prime is 1387452113. The next prime is 1387452149. The reversal of 1387452132 is 2312547831.

1387452132 is a `hidden beast` number, since 1 + 38 + 74 + 521 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 582757 + ... + 585132.

It is an arithmetic number, because the mean of its divisors is an integer number (81752300).

Almost surely, 2^1387452132 is an apocalyptic number.

1387452132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1387452132 is an abundant number, since it is smaller than the sum of its proper divisors (2536658268).

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

1387452132 is a wasteful number, since it uses less digits than its factorization.

1387452132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167913 (or 1167905 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 1387452132 is about 37248.5185208754. The cubic root of 1387452132 is about 1115.3367257714.

Adding to 1387452132 its reverse (2312547831), we get a palindrome (3699999963).

The spelling of 1387452132 in words is "one billion, three hundred eighty-seven million, four hundred fifty-two thousand, one hundred thirty-two".