28015270 has 16 divisors (see below), whose sum is σ = 51379920. Its totient is φ = 10994464.

The previous prime is 28015223. The next prime is 28015271. The reversal of 28015270 is 7251082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28015271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25900 + ... + 26959.

It is an arithmetic number, because the mean of its divisors is an integer number (3211245).

Almost surely, 2^28015270 is an apocalyptic number.

28015270 is a deficient number, since it is larger than the sum of its proper divisors (23364650).

28015270 is a wasteful number, since it uses less digits than its factorization.

28015270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52919.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 28015270 is about 5292.9453048374. The cubic root of 28015270 is about 303.7140880054.

The spelling of 28015270 in words is "twenty-eight million, fifteen thousand, two hundred seventy".