28747542 has 8 divisors (see below), whose sum is σ = 57495096. Its totient is φ = 9582512.

The previous prime is 28747541. The next prime is 28747553. The reversal of 28747542 is 24574782.

It is a sphenic number, since it is the product of 3 distinct primes.

28747542 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 28747542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28747541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2395623 + ... + 2395634.

It is an arithmetic number, because the mean of its divisors is an integer number (7186887).

Almost surely, 2^28747542 is an apocalyptic number.

28747542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28747542 is a wasteful number, since it uses less digits than its factorization.

28747542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4791262.

The product of its digits is 125440, while the sum is 39.

The square root of 28747542 is about 5361.6734328006. The cubic root of 28747542 is about 306.3375530875.

The spelling of 28747542 in words is "twenty-eight million, seven hundred forty-seven thousand, five hundred forty-two".