28461764 has 12 divisors (see below), whose sum is σ = 51973824. Its totient is φ = 13612104.

The previous prime is 28461761. The next prime is 28461767. The reversal of 28461764 is 46716482.

It is an interprime number because it is at equal distance from previous prime (28461761) and next prime (28461767).

It is not an unprimeable number, because it can be changed into a prime (28461761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154592 + ... + 154775.

It is an arithmetic number, because the mean of its divisors is an integer number (4331152).

Almost surely, 2^28461764 is an apocalyptic number.

It is an amenable number.

28461764 is a deficient number, since it is larger than the sum of its proper divisors (23512060).

28461764 is a wasteful number, since it uses less digits than its factorization.

28461764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309394 (or 309392 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 28461764 is about 5334.9567945767. The cubic root of 28461764 is about 305.3190748455.

The spelling of 28461764 in words is "twenty-eight million, four hundred sixty-one thousand, seven hundred sixty-four".