29944720 has 40 divisors (see below), whose sum is σ = 74979576. Its totient is φ = 11056128.

The previous prime is 29944711. The next prime is 29944723. The reversal of 29944720 is 2744992.

It can be written as a sum of positive squares in 4 ways, for example, as 1936 + 29942784 = 44^2 + 5472^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 29944720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29944723) 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, 13357 + ... + 15436.

Almost surely, 2^29944720 is an apocalyptic number.

29944720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29944720 is an abundant number, since it is smaller than the sum of its proper divisors (45034856).

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

29944720 is a wasteful number, since it uses less digits than its factorization.

29944720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28819 (or 28813 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 29944720 is about 5472.1768977254. The cubic root of 29944720 is about 310.5322801235.

The spelling of 29944720 in words is "twenty-nine million, nine hundred forty-four thousand, seven hundred twenty".