28573400 has 24 divisors (see below), whose sum is σ = 66433620. Its totient is φ = 11429280.

The previous prime is 28573393. The next prime is 28573403. The reversal of 28573400 is 437582.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28573403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71234 + ... + 71633.

Almost surely, 2^28573400 is an apocalyptic number.

28573400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28573400 is an abundant number, since it is smaller than the sum of its proper divisors (37860220).

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

28573400 is a wasteful number, since it uses less digits than its factorization.

28573400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142883 (or 142874 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 28573400 is about 5345.4092453244. The cubic root of 28573400 is about 305.7177399175.

The spelling of 28573400 in words is "twenty-eight million, five hundred seventy-three thousand, four hundred".