387442678 has 16 divisors (see below), whose sum is σ = 665176320. Its totient is φ = 165799656.

The previous prime is 387442673. The next prime is 387442691. The reversal of 387442678 is 876244783.

It is a super-2 number, since 2×387442678² = 300223657471623368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387442673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10698 + ... + 29821.

It is an arithmetic number, because the mean of its divisors is an integer number (41573520).

Almost surely, 2^387442678 is an apocalyptic number.

387442678 is a deficient number, since it is larger than the sum of its proper divisors (277733642).

387442678 is a wasteful number, since it uses less digits than its factorization.

387442678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41211.

The product of its digits is 1806336, while the sum is 49.

The square root of 387442678 is about 19683.5636509246. The cubic root of 387442678 is about 729.0139172404.

The spelling of 387442678 in words is "three hundred eighty-seven million, four hundred forty-two thousand, six hundred seventy-eight".