172601440 has 96 divisors (see below), whose sum is σ = 447703200. Its totient is φ = 62361600.

The previous prime is 172601413. The next prime is 172601449. The reversal of 172601440 is 44106271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172601449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494386 + ... + 494734.

It is an arithmetic number, because the mean of its divisors is an integer number (4663575).

Almost surely, 2^172601440 is an apocalyptic number.

172601440 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 172601440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223851600).

172601440 is an abundant number, since it is smaller than the sum of its proper divisors (275101760).

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

172601440 is a wasteful number, since it uses less digits than its factorization.

172601440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 172601440 is about 13137.7867237979. The cubic root of 172601440 is about 556.7772370907. Note that the first 3 decimals are identical.

The spelling of 172601440 in words is "one hundred seventy-two million, six hundred one thousand, four hundred forty".