28314402 has 32 divisors (see below), whose sum is σ = 58086720. Its totient is φ = 9197760.

The previous prime is 28314383. The next prime is 28314409. The reversal of 28314402 is 20441382.

It is not an unprimeable number, because it can be changed into a prime (28314409) 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, 85377 + ... + 85707.

It is an arithmetic number, because the mean of its divisors is an integer number (1815210).

Almost surely, 2^28314402 is an apocalyptic number.

28314402 is an abundant number, since it is smaller than the sum of its proper divisors (29772318).

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

28314402 is a wasteful number, since it uses less digits than its factorization.

28314402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 28314402 is about 5321.1278879576. The cubic root of 28314402 is about 304.7912286245.

Adding to 28314402 its reverse (20441382), we get a palindrome (48755784).

The spelling of 28314402 in words is "twenty-eight million, three hundred fourteen thousand, four hundred two".