28654320 has 160 divisors (see below), whose sum is σ = 96422400. Its totient is φ = 7017472.

The previous prime is 28654319. The next prime is 28654331. The reversal of 28654320 is 2345682.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159991 + ... + 160169.

It is an arithmetic number, because the mean of its divisors is an integer number (602640).

Almost surely, 2^28654320 is an apocalyptic number.

28654320 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 28654320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48211200).

28654320 is an abundant number, since it is smaller than the sum of its proper divisors (67768080).

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

28654320 is a wasteful number, since it uses less digits than its factorization.

28654320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 241 counting only the distinct ones).

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

The square root of 28654320 is about 5352.9730057231. The cubic root of 28654320 is about 306.0060659227.

The spelling of 28654320 in words is "twenty-eight million, six hundred fifty-four thousand, three hundred twenty".