28327964 has 24 divisors (see below), whose sum is σ = 57095808. Its totient is φ = 12046320.

The previous prime is 28327963. The next prime is 28327969. The reversal of 28327964 is 46972382.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28327963) 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, 194 + ... + 7529.

It is an arithmetic number, because the mean of its divisors is an integer number (2378992).

Almost surely, 2^28327964 is an apocalyptic number.

It is an amenable number.

28327964 is an abundant number, since it is smaller than the sum of its proper divisors (28767844).

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

28327964 is a wasteful number, since it uses less digits than its factorization.

28327964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7865 (or 7863 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 28327964 is about 5322.4020892826. The cubic root of 28327964 is about 304.8398837088.

The spelling of 28327964 in words is "twenty-eight million, three hundred twenty-seven thousand, nine hundred sixty-four".