29978005 has 8 divisors (see below), whose sum is σ = 36049824. Its totient is φ = 23931600.

The previous prime is 29977999. The next prime is 29978017. The reversal of 29978005 is 50087992.

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

It is not a de Polignac number, because 29978005 - 2¹⁷ = 29846933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3651 + ... + 8560.

It is an arithmetic number, because the mean of its divisors is an integer number (4506228).

Almost surely, 2^29978005 is an apocalyptic number.

It is an amenable number.

29978005 is a deficient number, since it is larger than the sum of its proper divisors (6071819).

29978005 is a wasteful number, since it uses less digits than its factorization.

29978005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12707.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 29978005 is about 5475.2173472840. The cubic root of 29978005 is about 310.6472947196.

The spelling of 29978005 in words is "twenty-nine million, nine hundred seventy-eight thousand, five".