29028981 has 8 divisors (see below), whose sum is σ = 38758720. Its totient is φ = 19325952.

The previous prime is 29028959. The next prime is 29028991. The reversal of 29028981 is 18982092.

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

It is not a de Polignac number, because 29028981 - 2¹⁴ = 29012597 is a prime.

It is a super-2 number, since 2×29028981² = 1685363475796722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29028991) 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, 3985 + ... + 8598.

It is an arithmetic number, because the mean of its divisors is an integer number (4844840).

Almost surely, 2^29028981 is an apocalyptic number.

It is an amenable number.

29028981 is a deficient number, since it is larger than the sum of its proper divisors (9729739).

29028981 is a wasteful number, since it uses less digits than its factorization.

29028981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13355.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 29028981 is about 5387.8549535042. The cubic root of 29028981 is about 307.3339919596. Note that the first 3 decimals are identical.

The spelling of 29028981 in words is "twenty-nine million, twenty-eight thousand, nine hundred eighty-one".