29770728 has 32 divisors (see below), whose sum is σ = 80152800. Its totient is φ = 9160128.

The previous prime is 29770721. The next prime is 29770753. The reversal of 29770728 is 82707792.

It is a self number, because there is not a number n which added to its sum of digits gives 29770728.

It is not an unprimeable number, because it can be changed into a prime (29770721) 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, 47398 + ... + 48021.

It is an arithmetic number, because the mean of its divisors is an integer number (2504775).

Almost surely, 2^29770728 is an apocalyptic number.

It is an amenable number.

29770728 is an abundant number, since it is smaller than the sum of its proper divisors (50382072).

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

29770728 is a wasteful number, since it uses less digits than its factorization.

29770728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95441 (or 95437 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 29770728 is about 5456.2558591034. The cubic root of 29770728 is about 309.9296684012.

The spelling of 29770728 in words is "twenty-nine million, seven hundred seventy thousand, seven hundred twenty-eight".