29472921 has 12 divisors (see below), whose sum is σ = 42714672. Its totient is φ = 19582776.

The previous prime is 29472893. The next prime is 29472923. The reversal of 29472921 is 12927492.

It is not a de Polignac number, because 29472921 - 2⁵ = 29472889 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (29472923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2571 + ... + 8096.

It is an arithmetic number, because the mean of its divisors is an integer number (3559556).

Almost surely, 2^29472921 is an apocalyptic number.

It is an amenable number.

29472921 is a deficient number, since it is larger than the sum of its proper divisors (13241751).

29472921 is a wasteful number, since it uses less digits than its factorization.

29472921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10980 (or 10977 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 29472921 is about 5428.8968492687. The cubic root of 29472921 is about 308.8927582102.

The spelling of 29472921 in words is "twenty-nine million, four hundred seventy-two thousand, nine hundred twenty-one".