387842500 has 30 divisors (see below), whose sum is σ = 848139446. Its totient is φ = 155136000.

The previous prime is 387842489. The next prime is 387842501. The reversal of 387842500 is 5248783.

It can be written as a sum of positive squares in 5 ways, for example, as 295221124 + 92621376 = 17182^2 + 9624^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 387842500.

It is not an unprimeable number, because it can be changed into a prime (387842501) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 75069 + ... + 80068.

Almost surely, 2^387842500 is an apocalyptic number.

It is an amenable number.

387842500 is an abundant number, since it is smaller than the sum of its proper divisors (460296946).

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

387842500 is a wasteful number, since it uses less digits than its factorization.

387842500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155161 (or 155144 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 387842500 is about 19693.7172722673. The cubic root of 387842500 is about 729.2645999981.

The spelling of 387842500 in words is "three hundred eighty-seven million, eight hundred forty-two thousand, five hundred".