387647228506 has 8 divisors (see below), whose sum is σ = 581610063060. Its totient is φ = 193777207488.

The previous prime is 387647228459. The next prime is 387647228537. The reversal of 387647228506 is 605822746783.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 376454646481 + 11192582025 = 613559^2 + 105795^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23192941 + ... + 23209648.

Almost surely, 2^387647228506 is an apocalyptic number.

387647228506 is a deficient number, since it is larger than the sum of its proper divisors (193962834554).

387647228506 is a wasteful number, since it uses less digits than its factorization.

387647228506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46406768.

The product of its (nonzero) digits is 27095040, while the sum is 58.

The spelling of 387647228506 in words is "three hundred eighty-seven billion, six hundred forty-seven million, two hundred twenty-eight thousand, five hundred six".