328738015 has 4 divisors (see below), whose sum is σ = 394485624. Its totient is φ = 262990408.

The previous prime is 328738013. The next prime is 328738021. The reversal of 328738015 is 510837823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 510837823 = 773 ⋅660851.

It is a cyclic number.

It is not a de Polignac number, because 328738015 - 2¹ = 328738013 is a prime.

It is a super-2 number, since 2×328738015² = 216137365012280450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328738013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32873797 + ... + 32873806.

It is an arithmetic number, because the mean of its divisors is an integer number (98621406).

Almost surely, 2^328738015 is an apocalyptic number.

328738015 is a deficient number, since it is larger than the sum of its proper divisors (65747609).

328738015 is an equidigital number, since it uses as much as digits as its factorization.

328738015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65747608.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 328738015 is about 18131.1338586422. The cubic root of 328738015 is about 690.1603037195.

The spelling of 328738015 in words is "three hundred twenty-eight million, seven hundred thirty-eight thousand, fifteen".