28733029 has 4 divisors (see below), whose sum is σ = 30943276. Its totient is φ = 26522784.

The previous prime is 28733021. The next prime is 28733039. The reversal of 28733029 is 92033782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92033782 = 2 ⋅46016891.

It can be written as a sum of positive squares in 2 ways, for example, as 7784100 + 20948929 = 2790^2 + 4577^2 .

It is a cyclic number.

It is not a de Polignac number, because 28733029 - 2³ = 28733021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28732985 and 28733003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28733021) 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, 1105104 + ... + 1105129.

It is an arithmetic number, because the mean of its divisors is an integer number (7735819).

Almost surely, 2^28733029 is an apocalyptic number.

It is an amenable number.

28733029 is a deficient number, since it is larger than the sum of its proper divisors (2210247).

28733029 is a wasteful number, since it uses less digits than its factorization.

28733029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210246.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 28733029 is about 5360.3198598591. The cubic root of 28733029 is about 306.2859936037.

The spelling of 28733029 in words is "twenty-eight million, seven hundred thirty-three thousand, twenty-nine".