387435380 has 12 divisors (see below), whose sum is σ = 813614340. Its totient is φ = 154974144.

The previous prime is 387435371. The next prime is 387435383. The reversal of 387435380 is 83534783.

It can be written as a sum of positive squares in 2 ways, for example, as 88698724 + 298736656 = 9418^2 + 17284^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387435383) by changing a digit.

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, 9685865 + ... + 9685904.

It is an arithmetic number, because the mean of its divisors is an integer number (67801195).

Almost surely, 2^387435380 is an apocalyptic number.

It is an amenable number.

387435380 is an abundant number, since it is smaller than the sum of its proper divisors (426178960).

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

387435380 is a wasteful number, since it uses less digits than its factorization.

387435380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19371778 (or 19371776 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 387435380 is about 19683.3782669541. The cubic root of 387435380 is about 729.0093398949.

The spelling of 387435380 in words is "three hundred eighty-seven million, four hundred thirty-five thousand, three hundred eighty".