28894042 has 4 divisors (see below), whose sum is σ = 43341066. Its totient is φ = 14447020.

The previous prime is 28894039. The next prime is 28894051. The reversal of 28894042 is 24049882.

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., 21706281 + 7187761 = 4659^2 + 2681^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28893992 and 28894010.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7223509 + ... + 7223512.

Almost surely, 2^28894042 is an apocalyptic number.

28894042 is a deficient number, since it is larger than the sum of its proper divisors (14447024).

28894042 is a wasteful number, since it uses less digits than its factorization.

28894042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14447023.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 28894042 is about 5375.3178510670. The cubic root of 28894042 is about 306.8570459864.

The spelling of 28894042 in words is "twenty-eight million, eight hundred ninety-four thousand, forty-two".