172540700 has 36 divisors (see below), whose sum is σ = 377137320. Its totient is φ = 68514240.

The previous prime is 172540601. The next prime is 172540703. The reversal of 172540700 is 7045271.

It is a self number, because there is not a number n which added to its sum of digits gives 172540700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172540703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7694 + ... + 20106.

Almost surely, 2^172540700 is an apocalyptic number.

172540700 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 172540700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188568660).

172540700 is an abundant number, since it is smaller than the sum of its proper divisors (204596620).

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

172540700 is a wasteful number, since it uses less digits than its factorization.

172540700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12566 (or 12559 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 172540700 is about 13135.4748677008. The cubic root of 172540700 is about 556.7119177879.

Adding to 172540700 its reverse (7045271), we get a palindrome (179585971).

The spelling of 172540700 in words is "one hundred seventy-two million, five hundred forty thousand, seven hundred".