172970070 has 128 divisors (see below), whose sum is σ = 541126656. Its totient is φ = 34338816.

The previous prime is 172970059. The next prime is 172970107. The reversal of 172970070 is 70079271.

It is a congruent number.

It is an unprimeable number.

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, 44547 + ... + 48273.

It is an arithmetic number, because the mean of its divisors is an integer number (4227552).

Almost surely, 2^172970070 is an apocalyptic number.

172970070 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 172970070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270563328).

172970070 is an abundant number, since it is smaller than the sum of its proper divisors (368156586).

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

172970070 is a wasteful number, since it uses less digits than its factorization.

172970070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3774.

The product of its (nonzero) digits is 6174, while the sum is 33.

The square root of 172970070 is about 13151.8086208704. The cubic root of 172970070 is about 557.1733304455.

The spelling of 172970070 in words is "one hundred seventy-two million, nine hundred seventy thousand, seventy".