29778960 has 80 divisors (see below), whose sum is σ = 93136896. Its totient is φ = 7870464.

The previous prime is 29778929. The next prime is 29778961. The reversal of 29778960 is 6987792.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (29778961) 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, 29992 + ... + 30968.

Almost surely, 2^29778960 is an apocalyptic number.

29778960 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 29778960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46568448).

29778960 is an abundant number, since it is smaller than the sum of its proper divisors (63357936).

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

29778960 is a wasteful number, since it uses less digits than its factorization.

29778960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120 (or 1114 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 29778960 is about 5457.0101704138. The cubic root of 29778960 is about 309.9582323193.

The spelling of 29778960 in words is "twenty-nine million, seven hundred seventy-eight thousand, nine hundred sixty".