28137334 has 16 divisors (see below), whose sum is σ = 42969888. Its totient is φ = 13816512.

The previous prime is 28137311. The next prime is 28137341. The reversal of 28137334 is 43373182.

It is a junction number, because it is equal to n+sod(n) for n = 28137296 and 28137305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27724 + ... + 28720.

It is an arithmetic number, because the mean of its divisors is an integer number (2685618).

Almost surely, 2^28137334 is an apocalyptic number.

28137334 is a deficient number, since it is larger than the sum of its proper divisors (14832554).

28137334 is a wasteful number, since it uses less digits than its factorization.

28137334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239.

The product of its digits is 12096, while the sum is 31.

The square root of 28137334 is about 5304.4635921081. The cubic root of 28137334 is about 304.1545483214.

The spelling of 28137334 in words is "twenty-eight million, one hundred thirty-seven thousand, three hundred thirty-four".