172630 has 16 divisors (see below), whose sum is σ = 316944. Its totient is φ = 67680.

The previous prime is 172619. The next prime is 172633. The reversal of 172630 is 36271.

It is a super-2 number, since 2×172630² = 59602233800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 172598 and 172607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172633) by changing a digit.

172630 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469 + ... + 751.

It is an arithmetic number, because the mean of its divisors is an integer number (19809).

2¹⁷²⁶³⁰ is an apocalyptic number.

172630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172630 is a deficient number, since it is larger than the sum of its proper divisors (144314).

172630 is a wasteful number, since it uses less digits than its factorization.

172630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 172630 is about 415.4876652802. The cubic root of 172630 is about 55.6807944986.

The spelling of 172630 in words is "one hundred seventy-two thousand, six hundred thirty".