28086142 has 32 divisors (see below), whose sum is σ = 53671680. Its totient is φ = 10730880.

The previous prime is 28086137. The next prime is 28086203. The reversal of 28086142 is 24168082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1417 + ... + 7627.

It is an arithmetic number, because the mean of its divisors is an integer number (1677240).

Almost surely, 2^28086142 is an apocalyptic number.

28086142 is a deficient number, since it is larger than the sum of its proper divisors (25585538).

28086142 is a wasteful number, since it uses less digits than its factorization.

28086142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6256.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 28086142 is about 5299.6360252380. The cubic root of 28086142 is about 303.9699805884.

The spelling of 28086142 in words is "twenty-eight million, eighty-six thousand, one hundred forty-two".