172197760 has 288 divisors, whose sum is σ = 535469400. Its totient is φ = 52641792.

The previous prime is 172197749. The next prime is 172197763. The reversal of 172197760 is 67791271.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172197763) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9063031 + ... + 9063049.

Almost surely, 2^172197760 is an apocalyptic number.

172197760 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 172197760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267734700).

172197760 is an abundant number, since it is smaller than the sum of its proper divisors (363271640).

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

172197760 is a wasteful number, since it uses less digits than its factorization.

172197760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 37044, while the sum is 40.

The square root of 172197760 is about 13122.4144119899. The cubic root of 172197760 is about 556.3428349873.

The spelling of 172197760 in words is "one hundred seventy-two million, one hundred ninety-seven thousand, seven hundred sixty".