28588620 has 24 divisors (see below), whose sum is σ = 80048304. Its totient is φ = 7623616.

The previous prime is 28588591. The next prime is 28588621. The reversal of 28588620 is 2688582.

It is not an unprimeable number, because it can be changed into a prime (28588621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238179 + ... + 238298.

It is an arithmetic number, because the mean of its divisors is an integer number (3335346).

Almost surely, 2^28588620 is an apocalyptic number.

28588620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28588620 is an abundant number, since it is smaller than the sum of its proper divisors (51459684).

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

28588620 is a wasteful number, since it uses less digits than its factorization.

28588620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476489 (or 476487 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 28588620 is about 5346.8327073137. The cubic root of 28588620 is about 305.7720118170.

The spelling of 28588620 in words is "twenty-eight million, five hundred eighty-eight thousand, six hundred twenty".