29397420 has 144 divisors (see below), whose sum is σ = 101818080. Its totient is φ = 6801408.

The previous prime is 29397413. The next prime is 29397443. The reversal of 29397420 is 2479392.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 39411 + ... + 40149.

It is an arithmetic number, because the mean of its divisors is an integer number (707070).

Almost surely, 2^29397420 is an apocalyptic number.

29397420 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 29397420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50909040).

29397420 is an abundant number, since it is smaller than the sum of its proper divisors (72420660).

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

29397420 is a wasteful number, since it uses less digits than its factorization.

29397420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 29397420 is about 5421.9387676365. The cubic root of 29397420 is about 308.6287683713.

The spelling of 29397420 in words is "twenty-nine million, three hundred ninety-seven thousand, four hundred twenty".