387340452 has 18 divisors (see below), whose sum is σ = 979110678. Its totient is φ = 129113472.

The previous prime is 387340451. The next prime is 387340463. The reversal of 387340452 is 254043783.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 256832676 + 130507776 = 16026^2 + 11424^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 10759457 = 387340452 / (3 + 8 + 7 + 3 + 4 + 0 + 4 + 5 + 2).

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (387340451) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 5379693 + ... + 5379764.

Almost surely, 2^387340452 is an apocalyptic number.

It is an amenable number.

387340452 is an abundant number, since it is smaller than the sum of its proper divisors (591770226).

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

387340452 is a wasteful number, since it uses less digits than its factorization.

387340452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10759467 (or 10759462 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 387340452 is about 19680.9667445479. The cubic root of 387340452 is about 728.9497952973.

The spelling of 387340452 in words is "three hundred eighty-seven million, three hundred forty thousand, four hundred fifty-two".