28484416 has 14 divisors (see below), whose sum is σ = 56523890. Its totient is φ = 14242176.

The previous prime is 28484411. The next prime is 28484429. The reversal of 28484416 is 61448482.

It can be written as a sum of positive squares in only one way, i.e., 26050816 + 2433600 = 5104^2 + 1560^2 .

It is a super-3 number, since 3×28484416³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28484411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222471 + ... + 222598.

Almost surely, 2^28484416 is an apocalyptic number.

It is an amenable number.

28484416 is a deficient number, since it is larger than the sum of its proper divisors (28039474).

28484416 is an equidigital number, since it uses as much as digits as its factorization.

28484416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445081 (or 445071 counting only the distinct ones).

The product of its digits is 49152, while the sum is 37.

The square root of 28484416 is about 5337.0793511058. The cubic root of 28484416 is about 305.4000519500.

It can be divided in two parts, 28484 and 416, that added together give a square (28900 = 170²).

The spelling of 28484416 in words is "twenty-eight million, four hundred eighty-four thousand, four hundred sixteen".