28889650 has 24 divisors (see below), whose sum is σ = 53996544. Its totient is φ = 11499600.

The previous prime is 28889639. The next prime is 28889683. The reversal of 28889650 is 5698882.

It is a happy number.

It is a super-2 number, since 2×28889650² = 1669223754245000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28889650.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9855 + ... + 12445.

It is an arithmetic number, because the mean of its divisors is an integer number (2249856).

Almost surely, 2^28889650 is an apocalyptic number.

28889650 is a deficient number, since it is larger than the sum of its proper divisors (25106894).

28889650 is a wasteful number, since it uses less digits than its factorization.

28889650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826 (or 2821 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 28889650 is about 5374.9093015604. The cubic root of 28889650 is about 306.8414974010.

The spelling of 28889650 in words is "twenty-eight million, eight hundred eighty-nine thousand, six hundred fifty".