28513270 has 8 divisors (see below), whose sum is σ = 51323904. Its totient is φ = 11405304.

The previous prime is 28513259. The next prime is 28513279. The reversal of 28513270 is 7231582.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28513279) 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, 1425654 + ... + 1425673.

It is an arithmetic number, because the mean of its divisors is an integer number (6415488).

Almost surely, 2^28513270 is an apocalyptic number.

28513270 is a deficient number, since it is larger than the sum of its proper divisors (22810634).

28513270 is a wasteful number, since it uses less digits than its factorization.

28513270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2851334.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 28513270 is about 5339.7818307493. The cubic root of 28513270 is about 305.5031380179.

The spelling of 28513270 in words is "twenty-eight million, five hundred thirteen thousand, two hundred seventy".