29823140 has 12 divisors (see below), whose sum is σ = 62628636. Its totient is φ = 11929248.

The previous prime is 29823139. The next prime is 29823149. The reversal of 29823140 is 4132892.

It can be written as a sum of positive squares in 2 ways, for example, as 5161984 + 24661156 = 2272^2 + 4966^2 .

It is not an unprimeable number, because it can be changed into a prime (29823149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 745559 + ... + 745598.

It is an arithmetic number, because the mean of its divisors is an integer number (5219053).

Almost surely, 2^29823140 is an apocalyptic number.

29823140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29823140 is an abundant number, since it is smaller than the sum of its proper divisors (32805496).

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

29823140 is a wasteful number, since it uses less digits than its factorization.

29823140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491166 (or 1491164 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 29823140 is about 5461.0566743076. The cubic root of 29823140 is about 310.1114410297. Note that the first 3 decimals are identical.

The spelling of 29823140 in words is "twenty-nine million, eight hundred twenty-three thousand, one hundred forty".