197928930 has 32 divisors (see below), whose sum is σ = 477667008. Its totient is φ = 52488000.

The previous prime is 197928919. The next prime is 197928931. The reversal of 197928930 is 39829791.

It is a super-2 number, since 2×197928930² = 78351722661889800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 197928930.

It is not an unprimeable number, because it can be changed into a prime (197928931) 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, 12796 + ... + 23655.

It is an arithmetic number, because the mean of its divisors is an integer number (14927094).

Almost surely, 2^197928930 is an apocalyptic number.

197928930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197928930 is an abundant number, since it is smaller than the sum of its proper divisors (279738078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197928930 is a wasteful number, since it uses less digits than its factorization.

197928930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36642.

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 197928930 is about 14068.7216903314. The cubic root of 197928930 is about 582.7779243169. Note that the first 3 decimals are identical.

The spelling of 197928930 in words is "one hundred ninety-seven million, nine hundred twenty-eight thousand, nine hundred thirty".