28207964 has 24 divisors (see below), whose sum is σ = 52744608. Its totient is φ = 13153280.

The previous prime is 28207937. The next prime is 28207967. The reversal of 28207964 is 46970282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28207967) 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, 5849 + ... + 9519.

It is an arithmetic number, because the mean of its divisors is an integer number (2197692).

Almost surely, 2^28207964 is an apocalyptic number.

It is an amenable number.

28207964 is a deficient number, since it is larger than the sum of its proper divisors (24536644).

28207964 is a wasteful number, since it uses less digits than its factorization.

28207964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3805 (or 3803 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 28207964 is about 5311.1170199874. The cubic root of 28207964 is about 304.4088307135.

The spelling of 28207964 in words is "twenty-eight million, two hundred seven thousand, nine hundred sixty-four".