197530920 has 64 divisors (see below), whose sum is σ = 658440000. Its totient is φ = 52674624.

The previous prime is 197530903. The next prime is 197530933. The reversal of 197530920 is 29035791.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90370 + ... + 92529.

It is an arithmetic number, because the mean of its divisors is an integer number (10288125).

Almost surely, 2^197530920 is an apocalyptic number.

197530920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197530920 is an abundant number, since it is smaller than the sum of its proper divisors (460909080).

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

197530920 is a wasteful number, since it uses less digits than its factorization.

197530920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182919 (or 182909 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 197530920 is about 14054.5693637336. The cubic root of 197530920 is about 582.3870313323.

The spelling of 197530920 in words is "one hundred ninety-seven million, five hundred thirty thousand, nine hundred twenty".