29885140 has 12 divisors (see below), whose sum is σ = 62758836. Its totient is φ = 11954048.

The previous prime is 29885137. The next prime is 29885153. The reversal of 29885140 is 4158892.

It can be written as a sum of positive squares in 2 ways, for example, as 8225424 + 21659716 = 2868^2 + 4654^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 29885140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747109 + ... + 747148.

It is an arithmetic number, because the mean of its divisors is an integer number (5229903).

Almost surely, 2^29885140 is an apocalyptic number.

29885140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29885140 is an abundant number, since it is smaller than the sum of its proper divisors (32873696).

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

29885140 is a wasteful number, since it uses less digits than its factorization.

29885140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494266 (or 1494264 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 29885140 is about 5466.7302841827. The cubic root of 29885140 is about 310.3261915104.

It can be divided in two parts, 2988 and 5140, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 29885140 in words is "twenty-nine million, eight hundred eighty-five thousand, one hundred forty".