28232038 has 4 divisors (see below), whose sum is σ = 42348060. Its totient is φ = 14116018.

The previous prime is 28232021. The next prime is 28232047. The reversal of 28232038 is 83023282.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 28231997 and 28232015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7058008 + ... + 7058011.

It is an arithmetic number, because the mean of its divisors is an integer number (10587015).

Almost surely, 2^28232038 is an apocalyptic number.

28232038 is a deficient number, since it is larger than the sum of its proper divisors (14116022).

28232038 is a wasteful number, since it uses less digits than its factorization.

28232038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14116021.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 28232038 is about 5313.3829148669. The cubic root of 28232038 is about 304.4954050157.

The spelling of 28232038 in words is "twenty-eight million, two hundred thirty-two thousand, thirty-eight".