29912740 has 48 divisors (see below), whose sum is σ = 73805760. Its totient is φ = 10039680.

The previous prime is 29912713. The next prime is 29912747. The reversal of 29912740 is 4721992.

It is a happy number.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 29912696 and 29912705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29912747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2370 + ... + 8089.

It is an arithmetic number, because the mean of its divisors is an integer number (1537620).

Almost surely, 2^29912740 is an apocalyptic number.

29912740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29912740 is an abundant number, since it is smaller than the sum of its proper divisors (43893020).

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

29912740 is a wasteful number, since it uses less digits than its factorization.

29912740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10492 (or 10490 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 29912740 is about 5469.2540624842. The cubic root of 29912740 is about 310.4216945770.

The spelling of 29912740 in words is "twenty-nine million, nine hundred twelve thousand, seven hundred forty".