28687607 has 8 divisors (see below), whose sum is σ = 30959040. Its totient is φ = 26425440.

The previous prime is 28687567. The next prime is 28687609. The reversal of 28687607 is 70678682.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28687607 - 2¹⁰ = 28686583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28687609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4994 + ... + 9072.

It is an arithmetic number, because the mean of its divisors is an integer number (3869880).

Almost surely, 2^28687607 is an apocalyptic number.

28687607 is a deficient number, since it is larger than the sum of its proper divisors (2271433).

28687607 is a wasteful number, since it uses less digits than its factorization.

28687607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4633.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 28687607 is about 5356.0813100624. The cubic root of 28687607 is about 306.1245132421.

The spelling of 28687607 in words is "twenty-eight million, six hundred eighty-seven thousand, six hundred seven".