387206864 has 40 divisors (see below), whose sum is σ = 844826880. Its totient is φ = 170323200.

The previous prime is 387206861. The next prime is 387206867. The reversal of 387206864 is 468602783.

It is an interprime number because it is at equal distance from previous prime (387206861) and next prime (387206867).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387206861) 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 7 ways as a sum of consecutive naturals, for example, 30029 + ... + 40940.

It is an arithmetic number, because the mean of its divisors is an integer number (21120672).

Almost surely, 2^387206864 is an apocalyptic number.

It is an amenable number.

387206864 is an abundant number, since it is smaller than the sum of its proper divisors (457620016).

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

387206864 is a wasteful number, since it uses less digits than its factorization.

387206864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71019 (or 71013 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 44.

The square root of 387206864 is about 19677.5726145274. The cubic root of 387206864 is about 728.8659843228.

The spelling of 387206864 in words is "three hundred eighty-seven million, two hundred six thousand, eight hundred sixty-four".