28488142 has 8 divisors (see below), whose sum is σ = 42789816. Its totient is φ = 14224872.

The previous prime is 28488139. The next prime is 28488143. The reversal of 28488142 is 24188482.

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

It is a super-2 number, since 2×28488142² = 1623148469224328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28488143) 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, 7668 + ... + 10759.

It is an arithmetic number, because the mean of its divisors is an integer number (5348727).

Almost surely, 2^28488142 is an apocalyptic number.

28488142 is a deficient number, since it is larger than the sum of its proper divisors (14301674).

28488142 is a wasteful number, since it uses less digits than its factorization.

28488142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19202.

The product of its digits is 32768, while the sum is 37.

The square root of 28488142 is about 5337.4284070140. The cubic root of 28488142 is about 305.4133676636.

The spelling of 28488142 in words is "twenty-eight million, four hundred eighty-eight thousand, one hundred forty-two".