29421312 has 72 divisors (see below), whose sum is σ = 81065040. Its totient is φ = 9461760.

The previous prime is 29421299. The next prime is 29421317. The reversal of 29421312 is 21312492.

It is a super-2 number, since 2×29421312² = 1731227199602688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29421317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21612 + ... + 22932.

Almost surely, 2^29421312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29421312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40532520).

29421312 is an abundant number, since it is smaller than the sum of its proper divisors (51643728).

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

29421312 is a wasteful number, since it uses less digits than its factorization.

29421312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369 (or 1355 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

The square root of 29421312 is about 5424.1415910723. The cubic root of 29421312 is about 308.7123557726.

The spelling of 29421312 in words is "twenty-nine million, four hundred twenty-one thousand, three hundred twelve".