28615967 has 2 divisors, whose sum is σ = 28615968. Its totient is φ = 28615966.

The previous prime is 28615963. The next prime is 28615999. The reversal of 28615967 is 76951682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28615967 - 2² = 28615963 is a prime.

It is a super-3 number, since 3×28615967³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28615963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14307983 + 14307984.

It is an arithmetic number, because the mean of its divisors is an integer number (14307984).

Almost surely, 2^28615967 is an apocalyptic number.

28615967 is a deficient number, since it is larger than the sum of its proper divisors (1).

28615967 is an equidigital number, since it uses as much as digits as its factorization.

28615967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 28615967 is about 5349.3894044087. The cubic root of 28615967 is about 305.8694781324.

The spelling of 28615967 in words is "twenty-eight million, six hundred fifteen thousand, nine hundred sixty-seven".