28311038 has 8 divisors (see below), whose sum is σ = 48533232. Its totient is φ = 12133296.

The previous prime is 28311013. The next prime is 28311053. The reversal of 28311038 is 83011382.

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

It is a junction number, because it is equal to n+sod(n) for n = 28310998 and 28311016.

It is a congruent number.

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, 1011095 + ... + 1011122.

It is an arithmetic number, because the mean of its divisors is an integer number (6066654).

Almost surely, 2^28311038 is an apocalyptic number.

28311038 is a deficient number, since it is larger than the sum of its proper divisors (20222194).

28311038 is a wasteful number, since it uses less digits than its factorization.

28311038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022226.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 28311038 is about 5320.8117801704. The cubic root of 28311038 is about 304.7791575202.

The spelling of 28311038 in words is "twenty-eight million, three hundred eleven thousand, thirty-eight".