28629867 has 16 divisors (see below), whose sum is σ = 44518400. Its totient is φ = 16359336.

The previous prime is 28629863. The next prime is 28629869. The reversal of 28629867 is 76892682.

It is a happy number.

It is not a de Polignac number, because 28629867 - 2² = 28629863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28629863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12883 + ... + 14940.

It is an arithmetic number, because the mean of its divisors is an integer number (2782400).

Almost surely, 2^28629867 is an apocalyptic number.

28629867 is a deficient number, since it is larger than the sum of its proper divisors (15888533).

28629867 is an equidigital number, since it uses as much as digits as its factorization.

28629867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27847 (or 27833 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 28629867 is about 5350.6884603759. The cubic root of 28629867 is about 305.9189947483.

The spelling of 28629867 in words is "twenty-eight million, six hundred twenty-nine thousand, eight hundred sixty-seven".