28493867 has 8 divisors (see below), whose sum is σ = 29598720. Its totient is φ = 27400680.

The previous prime is 28493837. The next prime is 28493897. The reversal of 28493867 is 76839482.

It is an interprime number because it is at equal distance from previous prime (28493837) and next prime (28493897).

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 28493867 - 2¹⁰ = 28492843 is a prime.

It is a super-2 number, since 2×28493867² = 1623800913227378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28493837) 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, 2234 + ... + 7872.

It is an arithmetic number, because the mean of its divisors is an integer number (3699840).

Almost surely, 2^28493867 is an apocalyptic number.

28493867 is a deficient number, since it is larger than the sum of its proper divisors (1104853).

28493867 is a wasteful number, since it uses less digits than its factorization.

28493867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5833.

The product of its digits is 580608, while the sum is 47.

The square root of 28493867 is about 5337.9646870319. The cubic root of 28493867 is about 305.4338249989.

The spelling of 28493867 in words is "twenty-eight million, four hundred ninety-three thousand, eight hundred sixty-seven".