28297030 has 8 divisors (see below), whose sum is σ = 50934672. Its totient is φ = 11318808.

The previous prime is 28297019. The next prime is 28297039. The reversal of 28297030 is 3079282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 28296983 and 28297001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28297039) 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, 1414842 + ... + 1414861.

It is an arithmetic number, because the mean of its divisors is an integer number (6366834).

Almost surely, 2^28297030 is an apocalyptic number.

28297030 is a deficient number, since it is larger than the sum of its proper divisors (22637642).

28297030 is a wasteful number, since it uses less digits than its factorization.

28297030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2829710.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 28297030 is about 5319.4952768096. The cubic root of 28297030 is about 304.7288820672.

The spelling of 28297030 in words is "twenty-eight million, two hundred ninety-seven thousand, thirty".