28017964 has 24 divisors (see below), whose sum is σ = 53025840. Its totient is φ = 12876864.

The previous prime is 28017961. The next prime is 28017967. The reversal of 28017964 is 46971082.

It is an interprime number because it is at equal distance from previous prime (28017961) and next prime (28017967).

It is not an unprimeable number, because it can be changed into a prime (28017961) 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, 12987 + ... + 14989.

It is an arithmetic number, because the mean of its divisors is an integer number (2209410).

Almost surely, 2^28017964 is an apocalyptic number.

It is an amenable number.

28017964 is a deficient number, since it is larger than the sum of its proper divisors (25007876).

28017964 is a wasteful number, since it uses less digits than its factorization.

28017964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289 (or 2287 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 28017964 is about 5293.1997884078. The cubic root of 28017964 is about 303.7238229289.

The spelling of 28017964 in words is "twenty-eight million, seventeen thousand, nine hundred sixty-four".