29156040 has 48 divisors (see below), whose sum is σ = 94758300. Its totient is φ = 7774848.

The previous prime is 29156011. The next prime is 29156041. The reversal of 29156040 is 4065192.

It can be written as a sum of positive squares in 2 ways, for example, as 27815076 + 1340964 = 5274^2 + 1158^2 .

It is a junction number, because it is equal to n+sod(n) for n = 29155995 and 29156013.

It is not an unprimeable number, because it can be changed into a prime (29156041) 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 11 ways as a sum of consecutive naturals, for example, 40135 + ... + 40854.

Almost surely, 2^29156040 is an apocalyptic number.

29156040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29156040 is an abundant number, since it is smaller than the sum of its proper divisors (65602260).

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

29156040 is a wasteful number, since it uses less digits than its factorization.

29156040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81006 (or 80999 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 29156040 is about 5399.6333208839. The cubic root of 29156040 is about 307.7817366337.

It can be divided in two parts, 291560 and 40, that added together give a square (291600 = 540²).

The spelling of 29156040 in words is "twenty-nine million, one hundred fifty-six thousand, forty".