28738146 has 32 divisors (see below), whose sum is σ = 61286400. Its totient is φ = 8957520.

The previous prime is 28738141. The next prime is 28738181. The reversal of 28738146 is 64183782.

It is not an unprimeable number, because it can be changed into a prime (28738141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7411 + ... + 10601.

It is an arithmetic number, because the mean of its divisors is an integer number (1915200).

Almost surely, 2^28738146 is an apocalyptic number.

28738146 is an abundant number, since it is smaller than the sum of its proper divisors (32548254).

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

28738146 is a wasteful number, since it uses less digits than its factorization.

28738146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3294.

The product of its digits is 64512, while the sum is 39.

The square root of 28738146 is about 5360.7971422168. The cubic root of 28738146 is about 306.3041744506.

The spelling of 28738146 in words is "twenty-eight million, seven hundred thirty-eight thousand, one hundred forty-six".