29397920 has 48 divisors (see below), whose sum is σ = 71705088. Its totient is φ = 11377920.

The previous prime is 29397919. The next prime is 29397941. The reversal of 29397920 is 2979392.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1997 + ... + 7923.

It is an arithmetic number, because the mean of its divisors is an integer number (1493856).

Almost surely, 2^29397920 is an apocalyptic number.

29397920 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 29397920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35852544).

29397920 is an abundant number, since it is smaller than the sum of its proper divisors (42307168).

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

29397920 is a wasteful number, since it uses less digits than its factorization.

29397920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5973 (or 5965 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 29397920 is about 5421.9848764083. The cubic root of 29397920 is about 308.6305181111.

The spelling of 29397920 in words is "twenty-nine million, three hundred ninety-seven thousand, nine hundred twenty".