29940720 has 40 divisors (see below), whose sum is σ = 92816976. Its totient is φ = 7984128.

The previous prime is 29940719. The next prime is 29940727. The reversal of 29940720 is 2704992.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29940727) 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, 62137 + ... + 62616.

Almost surely, 2^29940720 is an apocalyptic number.

29940720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29940720 is an abundant number, since it is smaller than the sum of its proper divisors (62876256).

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

29940720 is a wasteful number, since it uses less digits than its factorization.

29940720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124769 (or 124763 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 29940720 is about 5471.8114002586. The cubic root of 29940720 is about 310.5184525948.

The spelling of 29940720 in words is "twenty-nine million, nine hundred forty thousand, seven hundred twenty".