29974621 has 8 divisors (see below), whose sum is σ = 31792824. Its totient is φ = 28162560.

The previous prime is 29974591. The next prime is 29974631. The reversal of 29974621 is 12647992.

It can be written as a sum of positive squares in 4 ways, for example, as 3080025 + 26894596 = 1755^2 + 5186^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 29974621 - 2¹⁷ = 29843549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29974631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12001 + ... + 14281.

It is an arithmetic number, because the mean of its divisors is an integer number (3974103).

Almost surely, 2^29974621 is an apocalyptic number.

It is an amenable number.

29974621 is a deficient number, since it is larger than the sum of its proper divisors (1818203).

29974621 is a wasteful number, since it uses less digits than its factorization.

29974621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3071.

The product of its digits is 54432, while the sum is 40.

The square root of 29974621 is about 5474.9083097345. The cubic root of 29974621 is about 310.6356053716.

The spelling of 29974621 in words is "twenty-nine million, nine hundred seventy-four thousand, six hundred twenty-one".