3928207738 has 32 divisors (see below), whose sum is σ = 7267962240. Its totient is φ = 1550612160.

The previous prime is 3928207733. The next prime is 3928207769. The reversal of 3928207738 is 8377028293.

It is a junction number, because it is equal to n+sod(n) for n = 3928207691 and 3928207700.

It is not an unprimeable number, because it can be changed into a prime (3928207733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60493 + ... + 107311.

It is an arithmetic number, because the mean of its divisors is an integer number (227123820).

Almost surely, 2^3928207738 is an apocalyptic number.

3928207738 is a deficient number, since it is larger than the sum of its proper divisors (3339754502).

3928207738 is a wasteful number, since it uses less digits than its factorization.

3928207738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47302.

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

The square root of 3928207738 is about 62675.4157385494. The cubic root of 3928207738 is about 1577.8467353982.

The spelling of 3928207738 in words is "three billion, nine hundred twenty-eight million, two hundred seven thousand, seven hundred thirty-eight".