290268888 has 128 divisors (see below), whose sum is σ = 924134400. Its totient is φ = 73898496.

The previous prime is 290268821. The next prime is 290268893. The reversal of 290268888 is 888862092.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 290268888.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61045 + ... + 65627.

It is an arithmetic number, because the mean of its divisors is an integer number (7219800).

Almost surely, 2^290268888 is an apocalyptic number.

290268888 is a gapful number since it is divisible by the number (28) 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 290268888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (462067200).

290268888 is an abundant number, since it is smaller than the sum of its proper divisors (633865512).

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

290268888 is a wasteful number, since it uses less digits than its factorization.

290268888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4641 (or 4637 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 51.

The square root of 290268888 is about 17037.2793602735. The cubic root of 290268888 is about 662.1151061092.

The spelling of 290268888 in words is "two hundred ninety million, two hundred sixty-eight thousand, eight hundred eighty-eight".