28204074 has 12 divisors (see below), whose sum is σ = 61108866. Its totient is φ = 9401352.

The previous prime is 28204067. The next prime is 28204081. The reversal of 28204074 is 47040282.

It is an interprime number because it is at equal distance from previous prime (28204067) and next prime (28204081).

It can be written as a sum of positive squares in only one way, i.e., 25431849 + 2772225 = 5043^2 + 1665^2 .

It is an unprimeable number.

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, 783429 + ... + 783464.

Almost surely, 2^28204074 is an apocalyptic number.

28204074 is an abundant number, since it is smaller than the sum of its proper divisors (32904792).

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

28204074 is a wasteful number, since it uses less digits than its factorization.

28204074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566901 (or 1566898 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 28204074 is about 5310.7507943793. The cubic root of 28204074 is about 304.3948369730.

The spelling of 28204074 in words is "twenty-eight million, two hundred four thousand, seventy-four".