29172136 has 32 divisors (see below), whose sum is σ = 66191040. Its totient is φ = 11766528.

The previous prime is 29172127. The next prime is 29172179. The reversal of 29172136 is 63127192.

It is a junction number, because it is equal to n+sod(n) for n = 29172098 and 29172107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14370 + ... + 16273.

It is an arithmetic number, because the mean of its divisors is an integer number (2068470).

Almost surely, 2^29172136 is an apocalyptic number.

It is an amenable number.

29172136 is an abundant number, since it is smaller than the sum of its proper divisors (37018904).

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

29172136 is a wasteful number, since it uses less digits than its factorization.

29172136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30673 (or 30669 counting only the distinct ones).

The product of its digits is 4536, while the sum is 31.

The square root of 29172136 is about 5401.1235868104. The cubic root of 29172136 is about 307.8383646195.

It can be divided in two parts, 291 and 72136, that added together give a palindrome (72427).

The spelling of 29172136 in words is "twenty-nine million, one hundred seventy-two thousand, one hundred thirty-six".