290427788 has 12 divisors (see below), whose sum is σ = 580855632. Its totient is φ = 124469040.

The previous prime is 290427773. The next prime is 290427793. The reversal of 290427788 is 887724092.

It is a happy number.

290427788 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5186183 + ... + 5186238.

It is an arithmetic number, because the mean of its divisors is an integer number (48404636).

Almost surely, 2^290427788 is an apocalyptic number.

290427788 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

290427788 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

290427788 is a wasteful number, since it uses less digits than its factorization.

290427788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10372432 (or 10372430 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 290427788 is about 17041.9420254852. The cubic root of 290427788 is about 662.2359031843.

The spelling of 290427788 in words is "two hundred ninety million, four hundred twenty-seven thousand, seven hundred eighty-eight".