172015104 has 80 divisors (see below), whose sum is σ = 467126352. Its totient is φ = 56229888.

The previous prime is 172015087. The next prime is 172015121. The reversal of 172015104 is 401510271.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (172015087) and next prime (172015121).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80352 + ... + 82464.

Almost surely, 2^172015104 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 172015104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233563176).

172015104 is an abundant number, since it is smaller than the sum of its proper divisors (295111248).

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

172015104 is an equidigital number, since it uses as much as digits as its factorization.

172015104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187 (or 2171 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 172015104 is about 13115.4528705646. The cubic root of 172015104 is about 556.1460548271.

Adding to 172015104 its reverse (401510271), we get a palindrome (573525375).

The spelling of 172015104 in words is "one hundred seventy-two million, fifteen thousand, one hundred four".