197790530 has 32 divisors (see below), whose sum is σ = 417885696. Its totient is φ = 65980224.

The previous prime is 197790517. The next prime is 197790533. The reversal of 197790530 is 35097791.

It is not an unprimeable number, because it can be changed into a prime (197790533) 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, 35594 + ... + 40773.

It is an arithmetic number, because the mean of its divisors is an integer number (13058928).

Almost surely, 2^197790530 is an apocalyptic number.

197790530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197790530 is an abundant number, since it is smaller than the sum of its proper divisors (220095166).

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

197790530 is a wasteful number, since it uses less digits than its factorization.

197790530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76418.

The product of its (nonzero) digits is 59535, while the sum is 41.

The square root of 197790530 is about 14063.8021174930. The cubic root of 197790530 is about 582.6420585940.

The spelling of 197790530 in words is "one hundred ninety-seven million, seven hundred ninety thousand, five hundred thirty".