290493920 has 24 divisors (see below), whose sum is σ = 686292264. Its totient is φ = 116197504.

The previous prime is 290493913. The next prime is 290493923. The reversal of 290493920 is 29394092.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290493923) 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 3 ways as a sum of consecutive naturals, for example, 907634 + ... + 907953.

It is an arithmetic number, because the mean of its divisors is an integer number (28595511).

Almost surely, 2^290493920 is an apocalyptic number.

290493920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

290493920 is an abundant number, since it is smaller than the sum of its proper divisors (395798344).

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

290493920 is a wasteful number, since it uses less digits than its factorization.

290493920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815602 (or 1815594 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 290493920 is about 17043.8821868728. The cubic root of 290493920 is about 662.2861642852.

The spelling of 290493920 in words is "two hundred ninety million, four hundred ninety-three thousand, nine hundred twenty".