28070234 has 8 divisors (see below), whose sum is σ = 42280788. Its totient is φ = 13976640.

The previous prime is 28070227. The next prime is 28070249. The reversal of 28070234 is 43207082.

It can be written as a sum of positive squares in 2 ways, for example, as 25959025 + 2111209 = 5095^2 + 1453^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28637 + ... + 29600.

Almost surely, 2^28070234 is an apocalyptic number.

28070234 is a deficient number, since it is larger than the sum of its proper divisors (14210554).

28070234 is a wasteful number, since it uses less digits than its factorization.

28070234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58480.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 28070234 is about 5298.1349548686. The cubic root of 28070234 is about 303.9125801844.

The spelling of 28070234 in words is "twenty-eight million, seventy thousand, two hundred thirty-four".