28484787 has 16 divisors (see below), whose sum is σ = 40308480. Its totient is φ = 17853792.

The previous prime is 28484767. The next prime is 28484803. The reversal of 28484787 is 78748482.

It is a happy number.

It is not a de Polignac number, because 28484787 - 2⁸ = 28484531 is a prime.

It is a super-2 number, since 2×28484787² = 1622766180870738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28484747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 573 + ... + 7569.

It is an arithmetic number, because the mean of its divisors is an integer number (2519280).

Almost surely, 2^28484787 is an apocalyptic number.

28484787 is a deficient number, since it is larger than the sum of its proper divisors (11823693).

28484787 is a wasteful number, since it uses less digits than its factorization.

28484787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7082.

The product of its digits is 802816, while the sum is 48.

The square root of 28484787 is about 5337.1141078302. The cubic root of 28484787 is about 305.4013778554.

The spelling of 28484787 in words is "twenty-eight million, four hundred eighty-four thousand, seven hundred eighty-seven".