28737071 has 8 divisors (see below), whose sum is σ = 31881600. Its totient is φ = 25681240.

The previous prime is 28737061. The next prime is 28737073. The reversal of 28737071 is 17073782.

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 28737071 - 2¹⁰ = 28736047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28737073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21491 + ... + 22788.

It is an arithmetic number, because the mean of its divisors is an integer number (3985200).

Almost surely, 2^28737071 is an apocalyptic number.

28737071 is a deficient number, since it is larger than the sum of its proper divisors (3144529).

28737071 is a wasteful number, since it uses less digits than its factorization.

28737071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44349.

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 28737071 is about 5360.6968763399. The cubic root of 28737071 is about 306.3003551240.

The spelling of 28737071 in words is "twenty-eight million, seven hundred thirty-seven thousand, seventy-one".