197470720 has 40 divisors (see below), whose sum is σ = 473473044. Its totient is φ = 78987264.

The previous prime is 197470717. The next prime is 197470727. The reversal of 197470720 is 27074791.

It can be written as a sum of positive squares in 2 ways, for example, as 188897536 + 8573184 = 13744^2 + 2928^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 197470720.

It is not an unprimeable number, because it can be changed into a prime (197470727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36009 + ... + 41128.

Almost surely, 2^197470720 is an apocalyptic number.

197470720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197470720 is an abundant number, since it is smaller than the sum of its proper divisors (276002324).

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

197470720 is an frugal number, since it uses more digits than its factorization.

197470720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77160 (or 77144 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 197470720 is about 14052.4275482921. The cubic root of 197470720 is about 582.3278620952.

The spelling of 197470720 in words is "one hundred ninety-seven million, four hundred seventy thousand, seven hundred twenty".