290238984 has 128 divisors (see below), whose sum is σ = 969984000. Its totient is φ = 78553152.

The previous prime is 290238967. The next prime is 290239007. The reversal of 290238984 is 489832092.

It is a zygodrome in base 6.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23677 + ... + 33779.

It is an arithmetic number, because the mean of its divisors is an integer number (7578000).

Almost surely, 2^290238984 is an apocalyptic number.

290238984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 290238984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (484992000).

290238984 is an abundant number, since it is smaller than the sum of its proper divisors (679745016).

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

290238984 is a wasteful number, since it uses less digits than its factorization.

290238984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10144 (or 10134 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 290238984 is about 17036.4017327604. The cubic root of 290238984 is about 662.0923679160.

The spelling of 290238984 in words is "two hundred ninety million, two hundred thirty-eight thousand, nine hundred eighty-four".