172634970 has 128 divisors (see below), whose sum is σ = 457021440. Its totient is φ = 41610240.

The previous prime is 172634927. The next prime is 172634971. The reversal of 172634970 is 79436271.

172634970 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (172634971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 997804 + ... + 997976.

It is an arithmetic number, because the mean of its divisors is an integer number (3570480).

Almost surely, 2^172634970 is an apocalyptic number.

172634970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 172634970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228510720).

172634970 is an abundant number, since it is smaller than the sum of its proper divisors (284386470).

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

172634970 is a wasteful number, since it uses less digits than its factorization.

172634970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 172634970 is about 13139.0627519622. The cubic root of 172634970 is about 556.8132884161.

The spelling of 172634970 in words is "one hundred seventy-two million, six hundred thirty-four thousand, nine hundred seventy".