28161896 has 32 divisors (see below), whose sum is σ = 60594240. Its totient is φ = 12019968.

The previous prime is 28161893. The next prime is 28161899. The reversal of 28161896 is 69816182.

It is an interprime number because it is at equal distance from previous prime (28161893) and next prime (28161899).

It is not an unprimeable number, because it can be changed into a prime (28161893) 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, 14960 + ... + 16736.

It is an arithmetic number, because the mean of its divisors is an integer number (1893570).

Almost surely, 2^28161896 is an apocalyptic number.

It is an amenable number.

28161896 is an abundant number, since it is smaller than the sum of its proper divisors (32432344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28161896 is a wasteful number, since it uses less digits than its factorization.

28161896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073 (or 2069 counting only the distinct ones).

The product of its digits is 41472, while the sum is 41.

The square root of 28161896 is about 5306.7783070334. The cubic root of 28161896 is about 304.2430247360.

The spelling of 28161896 in words is "twenty-eight million, one hundred sixty-one thousand, eight hundred ninety-six".