29740981 has 4 divisors (see below), whose sum is σ = 29930572. Its totient is φ = 29551392.

The previous prime is 29740969. The next prime is 29740999. The reversal of 29740981 is 18904792.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19660356 + 10080625 = 4434^2 + 3175^2 .

It is a cyclic number.

It is not a de Polignac number, because 29740981 - 2⁷ = 29740853 is a prime.

It is a super-2 number, since 2×29740981² = 1769051901684722, 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 (29740951) 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, 94560 + ... + 94873.

It is an arithmetic number, because the mean of its divisors is an integer number (7482643).

Almost surely, 2^29740981 is an apocalyptic number.

It is an amenable number.

29740981 is a deficient number, since it is larger than the sum of its proper divisors (189591).

29740981 is a wasteful number, since it uses less digits than its factorization.

29740981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189590.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 29740981 is about 5453.5292242730. The cubic root of 29740981 is about 309.8264064514.

The spelling of 29740981 in words is "twenty-nine million, seven hundred forty thousand, nine hundred eighty-one".