28994029 has 4 divisors (see below), whose sum is σ = 29121984. Its totient is φ = 28866076.

The previous prime is 28993999. The next prime is 28994047. The reversal of 28994029 is 92049982.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92049982 = 2 ⋅46024991.

It is a cyclic number.

It is not a de Polignac number, because 28994029 - 2⁷ = 28993901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28994729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63637 + ... + 64090.

It is an arithmetic number, because the mean of its divisors is an integer number (7280496).

Almost surely, 2^28994029 is an apocalyptic number.

It is an amenable number.

28994029 is a deficient number, since it is larger than the sum of its proper divisors (127955).

28994029 is a wasteful number, since it uses less digits than its factorization.

28994029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127954.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 28994029 is about 5384.6103851625. The cubic root of 28994029 is about 307.2105951399.

The spelling of 28994029 in words is "twenty-eight million, nine hundred ninety-four thousand, twenty-nine".