28867611 has 8 divisors (see below), whose sum is σ = 38525760. Its totient is φ = 19227272.

The previous prime is 28867609. The next prime is 28867613. The reversal of 28867611 is 11676882.

It is an interprime number because it is at equal distance from previous prime (28867609) and next prime (28867613).

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 28867611 - 2¹ = 28867609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28867611.

It is not an unprimeable number, because it can be changed into a prime (28867613) 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, 45 + ... + 7598.

It is an arithmetic number, because the mean of its divisors is an integer number (4815720).

Almost surely, 2^28867611 is an apocalyptic number.

28867611 is a deficient number, since it is larger than the sum of its proper divisors (9658149).

28867611 is a wasteful number, since it uses less digits than its factorization.

28867611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8905.

The product of its digits is 32256, while the sum is 39.

The square root of 28867611 is about 5372.8587362781. The cubic root of 28867611 is about 306.7634509943.

The spelling of 28867611 in words is "twenty-eight million, eight hundred sixty-seven thousand, six hundred eleven".