28475237 has 8 divisors (see below), whose sum is σ = 33422976. Its totient is φ = 23747472.

The previous prime is 28475203. The next prime is 28475261. The reversal of 28475237 is 73257482.

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

It is not a de Polignac number, because 28475237 - 2⁸ = 28474981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28475237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28475287) 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, 54713 + ... + 55230.

It is an arithmetic number, because the mean of its divisors is an integer number (4177872).

Almost surely, 2^28475237 is an apocalyptic number.

It is an amenable number.

28475237 is a deficient number, since it is larger than the sum of its proper divisors (4947739).

28475237 is a wasteful number, since it uses less digits than its factorization.

28475237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109987.

The product of its digits is 94080, while the sum is 38.

The square root of 28475237 is about 5336.2193545618. The cubic root of 28475237 is about 305.3672437384.

The spelling of 28475237 in words is "twenty-eight million, four hundred seventy-five thousand, two hundred thirty-seven".