28494466 has 64 divisors (see below), whose sum is σ = 58899456. Its totient is φ = 9979200.

The previous prime is 28494461. The next prime is 28494469. The reversal of 28494466 is 66449482.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (28494461) 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 31 ways as a sum of consecutive naturals, for example, 85921 + ... + 86251.

It is an arithmetic number, because the mean of its divisors is an integer number (920304).

Almost surely, 2^28494466 is an apocalyptic number.

28494466 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28494466 is an abundant number, since it is smaller than the sum of its proper divisors (30404990).

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

28494466 is a wasteful number, since it uses less digits than its factorization.

28494466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407.

The product of its digits is 331776, while the sum is 43.

The square root of 28494466 is about 5338.0207942645. The cubic root of 28494466 is about 305.4359652674.

It can be divided in two parts, 28 and 494466, that added together give a palindrome (494494).

The spelling of 28494466 in words is "twenty-eight million, four hundred ninety-four thousand, four hundred sixty-six".