29320920 has 128 divisors (see below), whose sum is σ = 103550400. Its totient is φ = 7354368.

The previous prime is 29320919. The next prime is 29320927. The reversal of 29320920 is 2902392.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29320927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17562 + ... + 19158.

Almost surely, 2^29320920 is an apocalyptic number.

29320920 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 29320920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51775200).

29320920 is an abundant number, since it is smaller than the sum of its proper divisors (74229480).

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

29320920 is a wasteful number, since it uses less digits than its factorization.

29320920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634 (or 1624 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 29320920 is about 5414.8795000443. The cubic root of 29320920 is about 308.3608241052.

The spelling of 29320920 in words is "twenty-nine million, three hundred twenty thousand, nine hundred twenty".