28434318 has 16 divisors (see below), whose sum is σ = 62038656. Its totient is φ = 8616440.

The previous prime is 28434311. The next prime is 28434323. The reversal of 28434318 is 81343482.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28434311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215346 + ... + 215477.

It is an arithmetic number, because the mean of its divisors is an integer number (3877416).

Almost surely, 2^28434318 is an apocalyptic number.

28434318 is an abundant number, since it is smaller than the sum of its proper divisors (33604338).

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

28434318 is a wasteful number, since it uses less digits than its factorization.

28434318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430839.

The product of its digits is 18432, while the sum is 33.

The square root of 28434318 is about 5332.3838946572. The cubic root of 28434318 is about 305.2209024068.

The spelling of 28434318 in words is "twenty-eight million, four hundred thirty-four thousand, three hundred eighteen".