28006969 has 8 divisors (see below), whose sum is σ = 29534240. Its totient is φ = 26485056.

The previous prime is 28006967. The next prime is 28006987. The reversal of 28006969 is 96960082.

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 28006969 - 2¹ = 28006967 is a prime.

It is a super-2 number, since 2×28006969² = 1568780625133922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28006967) 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, 14017 + ... + 15889.

It is an arithmetic number, because the mean of its divisors is an integer number (3691780).

Almost surely, 2^28006969 is an apocalyptic number.

It is an amenable number.

28006969 is a deficient number, since it is larger than the sum of its proper divisors (1527271).

28006969 is a wasteful number, since it uses less digits than its factorization.

28006969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2679.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 28006969 is about 5292.1610897629. The cubic root of 28006969 is about 303.6840879413.

The spelling of 28006969 in words is "twenty-eight million, six thousand, nine hundred sixty-nine".