28957774 has 4 divisors (see below), whose sum is σ = 43436664. Its totient is φ = 14478886.

The previous prime is 28957771. The next prime is 28957777. The reversal of 28957774 is 47775982.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28957771) and next prime (28957777).

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28957771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7239442 + ... + 7239445.

It is an arithmetic number, because the mean of its divisors is an integer number (10859166).

Almost surely, 2^28957774 is an apocalyptic number.

28957774 is a deficient number, since it is larger than the sum of its proper divisors (14478890).

28957774 is a wasteful number, since it uses less digits than its factorization.

28957774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14478889.

The product of its digits is 987840, while the sum is 49.

The square root of 28957774 is about 5381.2427932588. The cubic root of 28957774 is about 307.0824932958.

The spelling of 28957774 in words is "twenty-eight million, nine hundred fifty-seven thousand, seven hundred seventy-four".