29173972 has 18 divisors (see below), whose sum is σ = 54236462. Its totient is φ = 13728384.

The previous prime is 29173967. The next prime is 29173973. The reversal of 29173972 is 27937192.

It can be written as a sum of positive squares in 3 ways, for example, as 15968016 + 13205956 = 3996^2 + 3634^2 .

It is a super-2 number, since 2×29173972² = 1702241284513568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29173973) 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 5 ways as a sum of consecutive naturals, for example, 11463 + ... + 13774.

Almost surely, 2^29173972 is an apocalyptic number.

It is an amenable number.

29173972 is a deficient number, since it is larger than the sum of its proper divisors (25062490).

29173972 is a wasteful number, since it uses less digits than its factorization.

29173972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25275 (or 25256 counting only the distinct ones).

The product of its digits is 47628, while the sum is 40.

The square root of 29173972 is about 5401.2935487714. The cubic root of 29173972 is about 307.8448226015.

It can be divided in two parts, 2917 and 3972, that added together give a square (6889 = 83²).

The spelling of 29173972 in words is "twenty-nine million, one hundred seventy-three thousand, nine hundred seventy-two".