28071650 has 24 divisors (see below), whose sum is σ = 52355280. Its totient is φ = 11198160.

The previous prime is 28071613. The next prime is 28071653. The reversal of 28071650 is 5617082.

It is not an unprimeable number, because it can be changed into a prime (28071653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30497 + ... + 31403.

It is an arithmetic number, because the mean of its divisors is an integer number (2181470).

Almost surely, 2^28071650 is an apocalyptic number.

28071650 is a deficient number, since it is larger than the sum of its proper divisors (24283630).

28071650 is a wasteful number, since it uses less digits than its factorization.

28071650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538 (or 1533 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 28071650 is about 5298.2685851134. The cubic root of 28071650 is about 303.9176903778.

The spelling of 28071650 in words is "twenty-eight million, seventy-one thousand, six hundred fifty".