387740506 has 8 divisors (see below), whose sum is σ = 593985600. Its totient is φ = 189745308.

The previous prime is 387740489. The next prime is 387740557. The reversal of 387740506 is 605047783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2062356 + ... + 2062543.

It is an arithmetic number, because the mean of its divisors is an integer number (74248200).

Almost surely, 2^387740506 is an apocalyptic number.

387740506 is a deficient number, since it is larger than the sum of its proper divisors (206245094).

387740506 is a wasteful number, since it uses less digits than its factorization.

387740506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4124948.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 387740506 is about 19691.1275959504. The cubic root of 387740506 is about 729.2006675730.

The spelling of 387740506 in words is "three hundred eighty-seven million, seven hundred forty thousand, five hundred six".