28061234 has 8 divisors (see below), whose sum is σ = 42508908. Its totient is φ = 13891600.

The previous prime is 28061213. The next prime is 28061239. The reversal of 28061234 is 43216082.

28061234 = T₁₅₂ + T₁₅₃ + ... + T₅₅₅.

It can be written as a sum of positive squares in 2 ways, for example, as 28058209 + 3025 = 5297^2 + 55^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28061239) 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, 69257 + ... + 69660.

Almost surely, 2^28061234 is an apocalyptic number.

28061234 is a deficient number, since it is larger than the sum of its proper divisors (14447674).

28061234 is a wasteful number, since it uses less digits than its factorization.

28061234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139020.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 28061234 is about 5297.2855312886. The cubic root of 28061234 is about 303.8800961232.

The spelling of 28061234 in words is "twenty-eight million, sixty-one thousand, two hundred thirty-four".