29072381 has 8 divisors (see below), whose sum is σ = 31395840. Its totient is φ = 26761392.

The previous prime is 29072377. The next prime is 29072399. The reversal of 29072381 is 18327092.

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 29072381 - 2² = 29072377 is a prime.

It is a super-2 number, since 2×29072381² = 1690406674018322, 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 (29072341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2060 + ... + 7898.

It is an arithmetic number, because the mean of its divisors is an integer number (3924480).

Almost surely, 2^29072381 is an apocalyptic number.

It is an amenable number.

29072381 is a deficient number, since it is larger than the sum of its proper divisors (2323459).

29072381 is a wasteful number, since it uses less digits than its factorization.

29072381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6235.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 29072381 is about 5391.8810261355. The cubic root of 29072381 is about 307.4870763732.

The spelling of 29072381 in words is "twenty-nine million, seventy-two thousand, three hundred eighty-one".