28404662 has 16 divisors (see below), whose sum is σ = 50056272. Its totient is φ = 11917920.

The previous prime is 28404613. The next prime is 28404679. The reversal of 28404662 is 26640482.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49373 + ... + 49944.

It is an arithmetic number, because the mean of its divisors is an integer number (3128517).

Almost surely, 2^28404662 is an apocalyptic number.

28404662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28404662 is a deficient number, since it is larger than the sum of its proper divisors (21651610).

28404662 is a wasteful number, since it uses less digits than its factorization.

28404662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99343.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 28404662 is about 5329.6024241964. The cubic root of 28404662 is about 305.1147539169.

The spelling of 28404662 in words is "twenty-eight million, four hundred four thousand, six hundred sixty-two".