28972941 has 8 divisors (see below), whose sum is σ = 39876864. Its totient is φ = 18692160.

The previous prime is 28972919. The next prime is 28972969. The reversal of 28972941 is 14927982.

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

It is not a de Polignac number, because 28972941 - 2¹⁸ = 28710797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28972893 and 28972902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28972991) 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, 155676 + ... + 155861.

It is an arithmetic number, because the mean of its divisors is an integer number (4984608).

Almost surely, 2^28972941 is an apocalyptic number.

It is an amenable number.

28972941 is a deficient number, since it is larger than the sum of its proper divisors (10903923).

28972941 is a wasteful number, since it uses less digits than its factorization.

28972941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311571.

The product of its digits is 72576, while the sum is 42.

The square root of 28972941 is about 5382.6518557306. The cubic root of 28972941 is about 307.1360967169.

The spelling of 28972941 in words is "twenty-eight million, nine hundred seventy-two thousand, nine hundred forty-one".