29739940 has 48 divisors (see below), whose sum is σ = 66870720. Its totient is φ = 11076480.

The previous prime is 29739907. The next prime is 29739967. The reversal of 29739940 is 4993792.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22539 + ... + 23821.

It is an arithmetic number, because the mean of its divisors is an integer number (1393140).

Almost surely, 2^29739940 is an apocalyptic number.

29739940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29739940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33435360).

29739940 is an abundant number, since it is smaller than the sum of its proper divisors (37130780).

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

29739940 is a wasteful number, since it uses less digits than its factorization.

29739940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372 (or 1370 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 29739940 is about 5453.4337806560. The cubic root of 29739940 is about 309.8227915398.

The spelling of 29739940 in words is "twenty-nine million, seven hundred thirty-nine thousand, nine hundred forty".