28773270 has 48 divisors (see below), whose sum is σ = 77231232. Its totient is φ = 7424640.

The previous prime is 28773257. The next prime is 28773281. The reversal of 28773270 is 7237782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2367 + ... + 7946.

It is an arithmetic number, because the mean of its divisors is an integer number (1608984).

Almost surely, 2^28773270 is an apocalyptic number.

28773270 is an abundant number, since it is smaller than the sum of its proper divisors (48457962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28773270 is a wasteful number, since it uses less digits than its factorization.

28773270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10357 (or 10354 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 28773270 is about 5364.0721471658. The cubic root of 28773270 is about 306.4289128117.

The spelling of 28773270 in words is "twenty-eight million, seven hundred seventy-three thousand, two hundred seventy".