28781162 has 16 divisors (see below), whose sum is σ = 45900000. Its totient is φ = 13496400.

The previous prime is 28781141. The next prime is 28781167. The reversal of 28781162 is 26118782.

It is not an unprimeable number, because it can be changed into a prime (28781167) 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, 89 + ... + 7587.

It is an arithmetic number, because the mean of its divisors is an integer number (2868750).

Almost surely, 2^28781162 is an apocalyptic number.

28781162 is a deficient number, since it is larger than the sum of its proper divisors (17118838).

28781162 is a wasteful number, since it uses less digits than its factorization.

28781162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7621.

The product of its digits is 10752, while the sum is 35.

The square root of 28781162 is about 5364.8077318763. The cubic root of 28781162 is about 306.4569262644.

The spelling of 28781162 in words is "twenty-eight million, seven hundred eighty-one thousand, one hundred sixty-two".