28146270 has 32 divisors (see below), whose sum is σ = 69379488. Its totient is φ = 7302528.

The previous prime is 28146263. The next prime is 28146281. The reversal of 28146270 is 7264182.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11569 + ... + 13788.

It is an arithmetic number, because the mean of its divisors is an integer number (2168109).

Almost surely, 2^28146270 is an apocalyptic number.

28146270 is an abundant number, since it is smaller than the sum of its proper divisors (41233218).

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

28146270 is a wasteful number, since it uses less digits than its factorization.

28146270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25404.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 28146270 is about 5305.3058347281. The cubic root of 28146270 is about 304.1867432381.

The spelling of 28146270 in words is "twenty-eight million, one hundred forty-six thousand, two hundred seventy".