28041264 has 120 divisors (see below), whose sum is σ = 85145840. Its totient is φ = 8584704.

The previous prime is 28041263. The next prime is 28041269. The reversal of 28041264 is 46214082.

It is not an unprimeable number, because it can be changed into a prime (28041263) 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 23 ways as a sum of consecutive naturals, for example, 101094 + ... + 101370.

Almost surely, 2^28041264 is an apocalyptic number.

28041264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28041264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42572920).

28041264 is an abundant number, since it is smaller than the sum of its proper divisors (57104576).

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

28041264 is a wasteful number, since it uses less digits than its factorization.

28041264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 28041264 is about 5295.4002681573. The cubic root of 28041264 is about 303.8079927884.

The spelling of 28041264 in words is "twenty-eight million, forty-one thousand, two hundred sixty-four".