28591600 has 30 divisors (see below), whose sum is σ = 68692280. Its totient is φ = 11436480.

The previous prime is 28591597. The next prime is 28591609. The reversal of 28591600 is 619582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28591609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35340 + ... + 36139.

Almost surely, 2^28591600 is an apocalyptic number.

28591600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28591600 is an abundant number, since it is smaller than the sum of its proper divisors (40100680).

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

28591600 is a wasteful number, since it uses less digits than its factorization.

28591600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71497 (or 71486 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 28591600 is about 5347.1113697023. Note that the first 3 decimals coincide. The cubic root of 28591600 is about 305.7826357288.

The spelling of 28591600 in words is "twenty-eight million, five hundred ninety-one thousand, six hundred".