28670951 has 2 divisors, whose sum is σ = 28670952. Its totient is φ = 28670950.

The previous prime is 28670947. The next prime is 28670953. The reversal of 28670951 is 15907682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28670951 - 2² = 28670947 is a prime.

Together with 28670953, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28670953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14335475 + 14335476.

It is an arithmetic number, because the mean of its divisors is an integer number (14335476).

Almost surely, 2^28670951 is an apocalyptic number.

28670951 is a deficient number, since it is larger than the sum of its proper divisors (1).

28670951 is an equidigital number, since it uses as much as digits as its factorization.

28670951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 28670951 is about 5354.5262162025. The cubic root of 28670951 is about 306.0652565626.

The spelling of 28670951 in words is "twenty-eight million, six hundred seventy thousand, nine hundred fifty-one".