172847064 has 64 divisors (see below), whose sum is σ = 471794400. Its totient is φ = 52448256.

The previous prime is 172847063. The next prime is 172847111. The reversal of 172847064 is 460748271.

It is a super-2 number, since 2×172847064² = 59752215066840192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172847063) 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, 18982 + ... + 26570.

Almost surely, 2^172847064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172847064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235897200).

172847064 is an abundant number, since it is smaller than the sum of its proper divisors (298947336).

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

172847064 is a wasteful number, since it uses less digits than its factorization.

172847064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7684 (or 7680 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 172847064 is about 13147.1313981416. The cubic root of 172847064 is about 557.0412229750.

The spelling of 172847064 in words is "one hundred seventy-two million, eight hundred forty-seven thousand, sixty-four".