29986656 has 48 divisors (see below), whose sum is σ = 89961984. Its totient is φ = 8567424.

The previous prime is 29986651. The next prime is 29986673. The reversal of 29986656 is 65668992.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 29986599 and 29986608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29986651) 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, 21640 + ... + 22983.

It is an arithmetic number, because the mean of its divisors is an integer number (1874208).

Almost surely, 2^29986656 is an apocalyptic number.

It is an amenable number.

29986656 is an abundant number, since it is smaller than the sum of its proper divisors (59975328).

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

29986656 is a wasteful number, since it uses less digits than its factorization.

29986656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44643 (or 44635 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The square root of 29986656 is about 5476.0073045970. The cubic root of 29986656 is about 310.6771738624.

The spelling of 29986656 in words is "twenty-nine million, nine hundred eighty-six thousand, six hundred fifty-six".