29423880 has 144 divisors (see below), whose sum is σ = 100346220. Its totient is φ = 7471872.

The previous prime is 29423879. The next prime is 29423881. The reversal of 29423880 is 8832492.

It is an interprime number because it is at equal distance from previous prime (29423879) and next prime (29423881).

It can be written as a sum of positive squares in 2 ways, for example, as 28708164 + 715716 = 5358^2 + 846^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (29423881) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 626017 + ... + 626063.

Almost surely, 2^29423880 is an apocalyptic number.

29423880 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 29423880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50173110).

29423880 is an abundant number, since it is smaller than the sum of its proper divisors (70922340).

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

29423880 is a wasteful number, since it uses less digits than its factorization.

29423880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 29423880 is about 5424.3783053913. The cubic root of 29423880 is about 308.7213373601.

It can be divided in two parts, 29423 and 880, that added together give a palindrome (30303).

The spelling of 29423880 in words is "twenty-nine million, four hundred twenty-three thousand, eight hundred eighty".