28484805 has 16 divisors (see below), whose sum is σ = 45696960. Its totient is φ = 15151488.

The previous prime is 28484803. The next prime is 28484831. The reversal of 28484805 is 50848482.

It is not a de Polignac number, because 28484805 - 2¹ = 28484803 is a prime.

It is a super-2 number, since 2×28484805² = 1622768231776050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28484803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3814 + ... + 8456.

It is an arithmetic number, because the mean of its divisors is an integer number (2856060).

Almost surely, 2^28484805 is an apocalyptic number.

It is an amenable number.

28484805 is a deficient number, since it is larger than the sum of its proper divisors (17212155).

28484805 is a wasteful number, since it uses less digits than its factorization.

28484805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060.

The product of its (nonzero) digits is 81920, while the sum is 39.

The square root of 28484805 is about 5337.1157941345. The cubic root of 28484805 is about 305.4014421848.

The spelling of 28484805 in words is "twenty-eight million, four hundred eighty-four thousand, eight hundred five".