387186667220 has 24 divisors (see below), whose sum is σ = 813106892808. Its totient is φ = 154871830400.

The previous prime is 387186667207. The next prime is 387186667237. The reversal of 387186667220 is 22766681783.

It can be written as a sum of positive squares in 4 ways, for example, as 131300421316 + 255886245904 = 362354^2 + 505852^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1204850 + ... + 1491990.

It is an arithmetic number, because the mean of its divisors is an integer number (33879453867).

Almost surely, 2^387186667220 is an apocalyptic number.

It is an amenable number.

387186667220 is an abundant number, since it is smaller than the sum of its proper divisors (425920225588).

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

387186667220 is a wasteful number, since it uses less digits than its factorization.

387186667220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354571 (or 354569 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 387186667220 in words is "three hundred eighty-seven billion, one hundred eighty-six million, six hundred sixty-seven thousand, two hundred twenty".