28634460 has 96 divisors (see below), whose sum is σ = 86365440. Its totient is φ = 7062528.

The previous prime is 28634453. The next prime is 28634467. The reversal of 28634460 is 6443682.

It is an interprime number because it is at equal distance from previous prime (28634453) and next prime (28634467).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28634467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68131 + ... + 68549.

It is an arithmetic number, because the mean of its divisors is an integer number (899640).

Almost surely, 2^28634460 is an apocalyptic number.

28634460 is a gapful number since it is divisible by the number (20) 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 28634460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43182720).

28634460 is an abundant number, since it is smaller than the sum of its proper divisors (57730980).

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

28634460 is a wasteful number, since it uses less digits than its factorization.

28634460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 28634460 is about 5351.1176402692. The cubic root of 28634460 is about 305.9353530827.

The spelling of 28634460 in words is "twenty-eight million, six hundred thirty-four thousand, four hundred sixty".