28147650 has 24 divisors (see below), whose sum is σ = 69806544. Its totient is φ = 7506000.

The previous prime is 28147643. The next prime is 28147663. The reversal of 28147650 is 5674182.

It is a Curzon number.

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, 93676 + ... + 93975.

It is an arithmetic number, because the mean of its divisors is an integer number (2908606).

Almost surely, 2^28147650 is an apocalyptic number.

28147650 is an abundant number, since it is smaller than the sum of its proper divisors (41658894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28147650 is a wasteful number, since it uses less digits than its factorization.

28147650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187666 (or 187661 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 28147650 is about 5305.4358916115. The cubic root of 28147650 is about 304.1917145403.

The spelling of 28147650 in words is "twenty-eight million, one hundred forty-seven thousand, six hundred fifty".