28413642 has 16 divisors (see below), whose sum is σ = 56900160. Its totient is φ = 9459072.

The previous prime is 28413641. The next prime is 28413643. The reversal of 28413642 is 24631482.

It is an interprime number because it is at equal distance from previous prime (28413641) and next prime (28413643).

It is not an unprimeable number, because it can be changed into a prime (28413641) 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 7 ways as a sum of consecutive naturals, for example, 2938 + ... + 8090.

It is an arithmetic number, because the mean of its divisors is an integer number (3556260).

Almost surely, 2^28413642 is an apocalyptic number.

28413642 is an abundant number, since it is smaller than the sum of its proper divisors (28486518).

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

28413642 is a wasteful number, since it uses less digits than its factorization.

28413642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6077.

The product of its digits is 9216, while the sum is 30.

The square root of 28413642 is about 5330.4448219637. Note that the first 3 decimals coincide. The cubic root of 28413642 is about 305.1469040595.

The spelling of 28413642 in words is "twenty-eight million, four hundred thirteen thousand, six hundred forty-two".