29974221 has 24 divisors (see below), whose sum is σ = 45714240. Its totient is φ = 18887616.

The previous prime is 29974211. The next prime is 29974223. The reversal of 29974221 is 12247992.

It is not a de Polignac number, because 29974221 - 2¹³ = 29966029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29974223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17610 + ... + 19236.

It is an arithmetic number, because the mean of its divisors is an integer number (1904760).

Almost surely, 2^29974221 is an apocalyptic number.

It is an amenable number.

29974221 is a deficient number, since it is larger than the sum of its proper divisors (15740019).

29974221 is a wasteful number, since it uses less digits than its factorization.

29974221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745 (or 1742 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 29974221 is about 5474.8717793205. The cubic root of 29974221 is about 310.6342235938.

The spelling of 29974221 in words is "twenty-nine million, nine hundred seventy-four thousand, two hundred twenty-one".