28145334 has 32 divisors (see below), whose sum is σ = 66410496. Its totient is φ = 7781760.

The previous prime is 28145333. The next prime is 28145347. The reversal of 28145334 is 43354182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28145333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9507 + ... + 12110.

It is an arithmetic number, because the mean of its divisors is an integer number (2075328).

Almost surely, 2^28145334 is an apocalyptic number.

28145334 is an abundant number, since it is smaller than the sum of its proper divisors (38265162).

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

28145334 is a wasteful number, since it uses less digits than its factorization.

28145334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21660.

The product of its digits is 11520, while the sum is 30.

The square root of 28145334 is about 5305.2176204186. The cubic root of 28145334 is about 304.1833713058.

The spelling of 28145334 in words is "twenty-eight million, one hundred forty-five thousand, three hundred thirty-four".