29872197 has 6 divisors (see below), whose sum is σ = 43148742. Its totient is φ = 19914792.

The previous prime is 29872177. The next prime is 29872223. The reversal of 29872197 is 79127892.

It can be written as a sum of positive squares in only one way, i.e., 27029601 + 2842596 = 5199^2 + 1686^2 .

It is not a de Polignac number, because 29872197 - 2¹¹ = 29870149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29872177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1659558 + ... + 1659575.

It is an arithmetic number, because the mean of its divisors is an integer number (7191457).

Almost surely, 2^29872197 is an apocalyptic number.

It is an amenable number.

29872197 is a deficient number, since it is larger than the sum of its proper divisors (13276545).

29872197 is a wasteful number, since it uses less digits than its factorization.

29872197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3319139 (or 3319136 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 29872197 is about 5465.5463587824. The cubic root of 29872197 is about 310.2813851632.

It can be divided in two parts, 2987 and 2197, that added together give a square (5184 = 72²).

The spelling of 29872197 in words is "twenty-nine million, eight hundred seventy-two thousand, one hundred ninety-seven".