28602720 has 120 divisors (see below), whose sum is σ = 100989504. Its totient is φ = 7623936.

The previous prime is 28602719. The next prime is 28602757. The reversal of 28602720 is 2720682.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 11857 + ... + 14063.

Almost surely, 2^28602720 is an apocalyptic number.

28602720 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 28602720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50494752).

28602720 is an abundant number, since it is smaller than the sum of its proper divisors (72386784).

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

28602720 is a wasteful number, since it uses less digits than its factorization.

28602720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234 (or 2217 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 28602720 is about 5348.1510823835. The cubic root of 28602720 is about 305.8222728039.

The spelling of 28602720 in words is "twenty-eight million, six hundred two thousand, seven hundred twenty".