197504820 has 72 divisors (see below), whose sum is σ = 601735680. Its totient is φ = 52436160.

The previous prime is 197504809. The next prime is 197504833. The reversal of 197504820 is 28405791.

197504820 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40725 + ... + 45315.

It is an arithmetic number, because the mean of its divisors is an integer number (8357440).

Almost surely, 2^197504820 is an apocalyptic number.

197504820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197504820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300867840).

197504820 is an abundant number, since it is smaller than the sum of its proper divisors (404230860).

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

197504820 is a wasteful number, since it uses less digits than its factorization.

197504820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4845 (or 4840 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 197504820 is about 14053.6408094131. The cubic root of 197504820 is about 582.3613797009.

The spelling of 197504820 in words is "one hundred ninety-seven million, five hundred four thousand, eight hundred twenty".