29725420 has 12 divisors (see below), whose sum is σ = 62423424. Its totient is φ = 11890160.

The previous prime is 29725417. The next prime is 29725429. The reversal of 29725420 is 2452792.

It is not an unprimeable number, because it can be changed into a prime (29725429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 743116 + ... + 743155.

It is an arithmetic number, because the mean of its divisors is an integer number (5201952).

Almost surely, 2^29725420 is an apocalyptic number.

29725420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29725420 is an abundant number, since it is smaller than the sum of its proper divisors (32698004).

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

29725420 is a wasteful number, since it uses less digits than its factorization.

29725420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486280 (or 1486278 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 29725420 is about 5452.1023468016. The cubic root of 29725420 is about 309.7723614979.

The spelling of 29725420 in words is "twenty-nine million, seven hundred twenty-five thousand, four hundred twenty".