29421630 has 80 divisors (see below), whose sum is σ = 90430560. Its totient is φ = 6723648.

The previous prime is 29421599. The next prime is 29421649. The reversal of 29421630 is 3612492.

29421630 is a `hidden beast` number, since 2 + 9 + 4 + 21 + 630 = 666.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 29421594 and 29421603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3076 + ... + 8264.

It is an arithmetic number, because the mean of its divisors is an integer number (1130382).

Almost surely, 2^29421630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29421630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45215280).

29421630 is an abundant number, since it is smaller than the sum of its proper divisors (61008930).

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

29421630 is a wasteful number, since it uses less digits than its factorization.

29421630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5215 (or 5206 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 29421630 is about 5424.1709043871. The cubic root of 29421630 is about 308.7134680068.

The spelling of 29421630 in words is "twenty-nine million, four hundred twenty-one thousand, six hundred thirty".