197028715 has 32 divisors (see below), whose sum is σ = 264531456. Its totient is φ = 139898880.

The previous prime is 197028707. The next prime is 197028749. The reversal of 197028715 is 517820791.

It is not a de Polignac number, because 197028715 - 2³ = 197028707 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 557979 + ... + 558331.

It is an arithmetic number, because the mean of its divisors is an integer number (8266608).

Almost surely, 2^197028715 is an apocalyptic number.

197028715 is a deficient number, since it is larger than the sum of its proper divisors (67502741).

197028715 is a wasteful number, since it uses less digits than its factorization.

197028715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679.

The product of its (nonzero) digits is 35280, while the sum is 40.

The square root of 197028715 is about 14036.6917398652. The cubic root of 197028715 is about 581.8930565223.

The spelling of 197028715 in words is "one hundred ninety-seven million, twenty-eight thousand, seven hundred fifteen".