28629807 has 4 divisors (see below), whose sum is σ = 38173080. Its totient is φ = 19086536.

The previous prime is 28629803. The next prime is 28629817. The reversal of 28629807 is 70892682.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28629807 - 2² = 28629803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28629803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4771632 + ... + 4771637.

It is an arithmetic number, because the mean of its divisors is an integer number (9543270).

Almost surely, 2^28629807 is an apocalyptic number.

28629807 is a deficient number, since it is larger than the sum of its proper divisors (9543273).

28629807 is an equidigital number, since it uses as much as digits as its factorization.

28629807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9543272.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 28629807 is about 5350.6828536178. The cubic root of 28629807 is about 305.9187810419.

The spelling of 28629807 in words is "twenty-eight million, six hundred twenty-nine thousand, eight hundred seven".