28751270 has 8 divisors (see below), whose sum is σ = 51752304. Its totient is φ = 11500504.

The previous prime is 28751251. The next prime is 28751287. The reversal of 28751270 is 7215782.

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

It is a super-2 number, since 2×28751270² = 1653271053225800, which contains 22 as substring.

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, 1437554 + ... + 1437573.

It is an arithmetic number, because the mean of its divisors is an integer number (6469038).

Almost surely, 2^28751270 is an apocalyptic number.

28751270 is a deficient number, since it is larger than the sum of its proper divisors (23001034).

28751270 is a wasteful number, since it uses less digits than its factorization.

28751270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875134.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 28751270 is about 5362.0210741846. The cubic root of 28751270 is about 306.3507945330.

The spelling of 28751270 in words is "twenty-eight million, seven hundred fifty-one thousand, two hundred seventy".