28146764 has 12 divisors (see below), whose sum is σ = 52154424. Its totient is φ = 13245504.

The previous prime is 28146761. The next prime is 28146793. The reversal of 28146764 is 46764182.

It is not an unprimeable number, because it can be changed into a prime (28146761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206894 + ... + 207029.

It is an arithmetic number, because the mean of its divisors is an integer number (4346202).

Almost surely, 2^28146764 is an apocalyptic number.

It is an amenable number.

28146764 is a deficient number, since it is larger than the sum of its proper divisors (24007660).

28146764 is a wasteful number, since it uses less digits than its factorization.

28146764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413944 (or 413942 counting only the distinct ones).

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

The square root of 28146764 is about 5305.3523916890. The cubic root of 28146764 is about 304.1885228389.

The spelling of 28146764 in words is "twenty-eight million, one hundred forty-six thousand, seven hundred sixty-four".