28446288 has 40 divisors (see below), whose sum is σ = 79140768. Its totient is φ = 8752512.

The previous prime is 28446277. The next prime is 28446289. The reversal of 28446288 is 88264482.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28446289) 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, 22170 + ... + 23417.

Almost surely, 2^28446288 is an apocalyptic number.

It is an amenable number.

28446288 is an abundant number, since it is smaller than the sum of its proper divisors (50694480).

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

28446288 is a wasteful number, since it uses less digits than its factorization.

28446288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45611 (or 45605 counting only the distinct ones).

The product of its digits is 196608, while the sum is 42.

The square root of 28446288 is about 5333.5061638663. The cubic root of 28446288 is about 305.2637260310.

The spelling of 28446288 in words is "twenty-eight million, four hundred forty-six thousand, two hundred eighty-eight".