197281572 has 12 divisors (see below), whose sum is σ = 460323696. Its totient is φ = 65760520.

The previous prime is 197281561. The next prime is 197281573. The reversal of 197281572 is 275182791.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (197281573) 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, 8220054 + ... + 8220077.

It is an arithmetic number, because the mean of its divisors is an integer number (38360308).

Almost surely, 2^197281572 is an apocalyptic number.

197281572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

197281572 is an abundant number, since it is smaller than the sum of its proper divisors (263042124).

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

197281572 is a wasteful number, since it uses less digits than its factorization.

197281572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16440138 (or 16440136 counting only the distinct ones).

The product of its digits is 70560, while the sum is 42.

The square root of 197281572 is about 14045.6958531787. The cubic root of 197281572 is about 582.1418744593.

The spelling of 197281572 in words is "one hundred ninety-seven million, two hundred eighty-one thousand, five hundred seventy-two".