28514442 has 16 divisors (see below), whose sum is σ = 62213472. Its totient is φ = 8640720.

The previous prime is 28514441. The next prime is 28514449. The reversal of 28514442 is 24441582.

It is not an unprimeable number, because it can be changed into a prime (28514441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215953 + ... + 216084.

It is an arithmetic number, because the mean of its divisors is an integer number (3888342).

Almost surely, 2^28514442 is an apocalyptic number.

28514442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28514442 is an abundant number, since it is smaller than the sum of its proper divisors (33699030).

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

28514442 is a wasteful number, since it uses less digits than its factorization.

28514442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432053.

The product of its digits is 10240, while the sum is 30.

The square root of 28514442 is about 5339.8915719329. The cubic root of 28514442 is about 305.5073237271.

The spelling of 28514442 in words is "twenty-eight million, five hundred fourteen thousand, four hundred forty-two".