28061582 has 4 divisors (see below), whose sum is σ = 42092376. Its totient is φ = 14030790.

The previous prime is 28061569. The next prime is 28061597. The reversal of 28061582 is 28516082.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7015394 + ... + 7015397.

It is an arithmetic number, because the mean of its divisors is an integer number (10523094).

Almost surely, 2^28061582 is an apocalyptic number.

28061582 is a deficient number, since it is larger than the sum of its proper divisors (14030794).

28061582 is a wasteful number, since it uses less digits than its factorization.

28061582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14030793.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 28061582 is about 5297.3183781985. The cubic root of 28061582 is about 303.8813523026.

The spelling of 28061582 in words is "twenty-eight million, sixty-one thousand, five hundred eighty-two".