28739601 has 24 divisors (see below), whose sum is σ = 46038720. Its totient is φ = 17128800.

The previous prime is 28739597. The next prime is 28739603. The reversal of 28739601 is 10693782.

It is not a de Polignac number, because 28739601 - 2² = 28739597 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28739603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3660 + ... + 8418.

It is an arithmetic number, because the mean of its divisors is an integer number (1918280).

Almost surely, 2^28739601 is an apocalyptic number.

It is an amenable number.

28739601 is a deficient number, since it is larger than the sum of its proper divisors (17299119).

28739601 is a wasteful number, since it uses less digits than its factorization.

28739601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4837 (or 4834 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 28739601 is about 5360.9328479286. The cubic root of 28739601 is about 306.3093437130.

The spelling of 28739601 in words is "twenty-eight million, seven hundred thirty-nine thousand, six hundred one".