29937421 has 16 divisors (see below), whose sum is σ = 32659200. Its totient is φ = 27364480.

The previous prime is 29937419. The next prime is 29937431. The reversal of 29937421 is 12473992.

It is not a de Polignac number, because 29937421 - 2¹ = 29937419 is a prime.

It is a super-2 number, since 2×29937421² = 1792498352262482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29937431) 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 15 ways as a sum of consecutive naturals, for example, 49680 + ... + 50278.

It is an arithmetic number, because the mean of its divisors is an integer number (2041200).

Almost surely, 2^29937421 is an apocalyptic number.

It is an amenable number.

29937421 is a deficient number, since it is larger than the sum of its proper divisors (2721779).

29937421 is a wasteful number, since it uses less digits than its factorization.

29937421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716.

The product of its digits is 27216, while the sum is 37.

The square root of 29937421 is about 5471.5099378508. The cubic root of 29937421 is about 310.5070474137.

The spelling of 29937421 in words is "twenty-nine million, nine hundred thirty-seven thousand, four hundred twenty-one".