28390662 has 24 divisors (see below), whose sum is σ = 63792456. Its totient is φ = 9463392.

The previous prime is 28390657. The next prime is 28390673. The reversal of 28390662 is 26609382.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 28723 + ... + 29694.

It is an arithmetic number, because the mean of its divisors is an integer number (2658019).

Almost surely, 2^28390662 is an apocalyptic number.

28390662 is an abundant number, since it is smaller than the sum of its proper divisors (35401794).

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

28390662 is an equidigital number, since it uses as much as digits as its factorization.

28390662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58434 (or 58422 counting only the distinct ones).

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

The square root of 28390662 is about 5328.2888435219. The cubic root of 28390662 is about 305.0646176805.

The spelling of 28390662 in words is "twenty-eight million, three hundred ninety thousand, six hundred sixty-two".