29028240 has 160 divisors (see below), whose sum is σ = 101779200. Its totient is φ = 7603200.

The previous prime is 29028229. The next prime is 29028247. The reversal of 29028240 is 4282092.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29028247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192165 + ... + 192315.

It is an arithmetic number, because the mean of its divisors is an integer number (636120).

Almost surely, 2^29028240 is an apocalyptic number.

29028240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29028240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50889600).

29028240 is an abundant number, since it is smaller than the sum of its proper divisors (72750960).

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

29028240 is a wasteful number, since it uses less digits than its factorization.

29028240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 29028240 is about 5387.7861872944. The cubic root of 29028240 is about 307.3313769129.

Adding to 29028240 its product of nonzero digits (2304), we get a square (29030544 = 5388²).

The spelling of 29028240 in words is "twenty-nine million, twenty-eight thousand, two hundred forty".