28319650 has 12 divisors (see below), whose sum is σ = 52674642. Its totient is φ = 11327840.

The previous prime is 28319639. The next prime is 28319651. The reversal of 28319650 is 5691382.

It can be written as a sum of positive squares in 3 ways, for example, as 26553409 + 1766241 = 5153^2 + 1329^2 .

It is a super-2 number, since 2×28319650² = 1604005152245000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28319651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 283147 + ... + 283246.

Almost surely, 2^28319650 is an apocalyptic number.

28319650 is a deficient number, since it is larger than the sum of its proper divisors (24354992).

28319650 is a wasteful number, since it uses less digits than its factorization.

28319650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566405 (or 566400 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 28319650 is about 5321.6209936447. The cubic root of 28319650 is about 304.8100582123.

The spelling of 28319650 in words is "twenty-eight million, three hundred nineteen thousand, six hundred fifty".