386768731 has 16 divisors (see below), whose sum is σ = 415528960. Its totient is φ = 358901280.

The previous prime is 386768671. The next prime is 386768743. The reversal of 386768731 is 137867683.

It is a cyclic number.

It is not a de Polignac number, because 386768731 - 2¹¹ = 386766683 is a prime.

It is a super-2 number, since 2×386768731² = 299180102558700722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (386768831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355270 + ... + 356356.

It is an arithmetic number, because the mean of its divisors is an integer number (25970560).

Almost surely, 2^386768731 is an apocalyptic number.

386768731 is a deficient number, since it is larger than the sum of its proper divisors (28760229).

386768731 is a wasteful number, since it uses less digits than its factorization.

386768731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474.

The product of its digits is 1016064, while the sum is 49.

The square root of 386768731 is about 19666.4366624968. The cubic root of 386768731 is about 728.5909713236.

The spelling of 386768731 in words is "three hundred eighty-six million, seven hundred sixty-eight thousand, seven hundred thirty-one".