28451960 has 16 divisors (see below), whose sum is σ = 64017000. Its totient is φ = 11380768.

The previous prime is 28451923. The next prime is 28451963. The reversal of 28451960 is 6915482.

It is a self number, because there is not a number n which added to its sum of digits gives 28451960.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28451963) 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, 355610 + ... + 355689.

Almost surely, 2^28451960 is an apocalyptic number.

28451960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28451960 is an abundant number, since it is smaller than the sum of its proper divisors (35565040).

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

28451960 is a wasteful number, since it uses less digits than its factorization.

28451960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711310 (or 711306 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 28451960 is about 5334.0378701318. The cubic root of 28451960 is about 305.2840138660.

The spelling of 28451960 in words is "twenty-eight million, four hundred fifty-one thousand, nine hundred sixty".