29743980 has 144 divisors (see below), whose sum is σ = 98977536. Its totient is φ = 6652800.

The previous prime is 29743969. The next prime is 29743993. The reversal of 29743980 is 8934792.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 196905 + ... + 197055.

It is an arithmetic number, because the mean of its divisors is an integer number (687344).

Almost surely, 2^29743980 is an apocalyptic number.

29743980 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 29743980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49488768).

29743980 is an abundant number, since it is smaller than the sum of its proper divisors (69233556).

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

29743980 is a wasteful number, since it uses less digits than its factorization.

29743980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 29743980 is about 5453.8041769026. The cubic root of 29743980 is about 309.8368201200.

The spelling of 29743980 in words is "twenty-nine million, seven hundred forty-three thousand, nine hundred eighty".