28023070 has 16 divisors (see below), whose sum is σ = 52069248. Its totient is φ = 10847520.

The previous prime is 28023031. The next prime is 28023071. The reversal of 28023070 is 7032082.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28023071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44889 + ... + 45508.

It is an arithmetic number, because the mean of its divisors is an integer number (3254328).

Almost surely, 2^28023070 is an apocalyptic number.

28023070 is a deficient number, since it is larger than the sum of its proper divisors (24046178).

28023070 is a wasteful number, since it uses less digits than its factorization.

28023070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90435.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 28023070 is about 5293.6820833896. The cubic root of 28023070 is about 303.7422720406.

The spelling of 28023070 in words is "twenty-eight million, twenty-three thousand, seventy".