28290366 has 24 divisors (see below), whose sum is σ = 66011400. Its totient is φ = 8704656.

The previous prime is 28290359. The next prime is 28290371. The reversal of 28290366 is 66309282.

28290366 = T₂₁₃ + T₂₁₄ + ... + T₅₆₃.

28290366 is a `hidden beast` number, since 2 + 8 + 290 + 366 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 28290366.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60216 + ... + 60683.

It is an arithmetic number, because the mean of its divisors is an integer number (2750475).

Almost surely, 2^28290366 is an apocalyptic number.

28290366 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28290366 is an abundant number, since it is smaller than the sum of its proper divisors (37721034).

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

28290366 is a wasteful number, since it uses less digits than its factorization.

28290366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120920 (or 120917 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 28290366 is about 5318.8688647117. The cubic root of 28290366 is about 304.7049587945.

The spelling of 28290366 in words is "twenty-eight million, two hundred ninety thousand, three hundred sixty-six".