28970026 has 8 divisors (see below), whose sum is σ = 44515044. Its totient is φ = 14131680.

The previous prime is 28970021. The next prime is 28970077. The reversal of 28970026 is 62007982.

It can be written as a sum of positive squares in 2 ways, for example, as 28249225 + 720801 = 5315^2 + 849^2 .

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 = 28969973 and 28970000.

It is not an unprimeable number, because it can be changed into a prime (28970021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176565 + ... + 176728.

Almost surely, 2^28970026 is an apocalyptic number.

28970026 is a deficient number, since it is larger than the sum of its proper divisors (15545018).

28970026 is a wasteful number, since it uses less digits than its factorization.

28970026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353336.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 28970026 is about 5382.3810716076. The cubic root of 28970026 is about 307.1257959361.

The spelling of 28970026 in words is "twenty-eight million, nine hundred seventy thousand, twenty-six".