28400562 has 24 divisors (see below), whose sum is σ = 61725456. Its totient is φ = 9437496.

The previous prime is 28400543. The next prime is 28400569. The reversal of 28400562 is 26500482.

It is not an unprimeable number, because it can be changed into a prime (28400569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3973 + ... + 8519.

It is an arithmetic number, because the mean of its divisors is an integer number (2571894).

Almost surely, 2^28400562 is an apocalyptic number.

28400562 is an abundant number, since it is smaller than the sum of its proper divisors (33324894).

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

28400562 is a wasteful number, since it uses less digits than its factorization.

28400562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4902 (or 4899 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 28400562 is about 5329.2177662392. The cubic root of 28400562 is about 305.1000728681.

The spelling of 28400562 in words is "twenty-eight million, four hundred thousand, five hundred sixty-two".