29270981 has 4 divisors (see below), whose sum is σ = 29379264. Its totient is φ = 29162700.

The previous prime is 29270977. The next prime is 29271013. The reversal of 29270981 is 18907292.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29270981 - 2² = 29270977 is a prime.

It is a super-2 number, since 2×29270981² = 1713580657404722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29270951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53735 + ... + 54276.

It is an arithmetic number, because the mean of its divisors is an integer number (7344816).

Almost surely, 2^29270981 is an apocalyptic number.

It is an amenable number.

29270981 is a deficient number, since it is larger than the sum of its proper divisors (108283).

29270981 is a wasteful number, since it uses less digits than its factorization.

29270981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108282.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 29270981 is about 5410.2662596216. The cubic root of 29270981 is about 308.1856592733.

The spelling of 29270981 in words is "twenty-nine million, two hundred seventy thousand, nine hundred eighty-one".