28655064 has 96 divisors (see below), whose sum is σ = 84324240. Its totient is φ = 8755200.

The previous prime is 28655051. The next prime is 28655083. The reversal of 28655064 is 46055682.

It is a super-2 number, since 2×28655064² = 1642225385688192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49899 + ... + 50469.

Almost surely, 2^28655064 is an apocalyptic number.

28655064 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 28655064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42162120).

28655064 is an abundant number, since it is smaller than the sum of its proper divisors (55669176).

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

28655064 is a wasteful number, since it uses less digits than its factorization.

28655064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 28655064 is about 5353.0424993643. The cubic root of 28655064 is about 306.0087143488.

The spelling of 28655064 in words is "twenty-eight million, six hundred fifty-five thousand, sixty-four".