28974474 has 12 divisors (see below), whose sum is σ = 62778066. Its totient is φ = 9658152.

The previous prime is 28974469. The next prime is 28974479. The reversal of 28974474 is 47447982.

It is an interprime number because it is at equal distance from previous prime (28974469) and next prime (28974479).

It can be written as a sum of positive squares in only one way, i.e., 20766249 + 8208225 = 4557^2 + 2865^2 .

It is not an unprimeable number, because it can be changed into a prime (28974479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 804829 + ... + 804864.

Almost surely, 2^28974474 is an apocalyptic number.

28974474 is an abundant number, since it is smaller than the sum of its proper divisors (33803592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28974474 is a wasteful number, since it uses less digits than its factorization.

28974474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609701 (or 1609698 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 28974474 is about 5382.7942557746. The cubic root of 28974474 is about 307.1415136257.

The spelling of 28974474 in words is "twenty-eight million, nine hundred seventy-four thousand, four hundred seventy-four".