28029074 has 4 divisors (see below), whose sum is σ = 42043614. Its totient is φ = 14014536.

The previous prime is 28029049. The next prime is 28029097. The reversal of 28029074 is 47092082.

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

It can be written as a sum of positive squares in only one way, i.e., 28015849 + 13225 = 5293^2 + 115^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28029074.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7007267 + ... + 7007270.

Almost surely, 2^28029074 is an apocalyptic number.

28029074 is a deficient number, since it is larger than the sum of its proper divisors (14014540).

28029074 is a wasteful number, since it uses less digits than its factorization.

28029074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14014539.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 28029074 is about 5294.2491441186. The cubic root of 28029074 is about 303.7639629590.

The spelling of 28029074 in words is "twenty-eight million, twenty-nine thousand, seventy-four".