290320624 has 60 divisors (see below), whose sum is σ = 639724680. Its totient is φ = 127388800.

The previous prime is 290320621. The next prime is 290320643. The reversal of 290320624 is 426023092.

It is a junction number, because it is equal to n+sod(n) for n = 290320592 and 290320601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290320621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53559 + ... + 58729.

It is an arithmetic number, because the mean of its divisors is an integer number (10662078).

Almost surely, 2^290320624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 290320624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319862340).

290320624 is an abundant number, since it is smaller than the sum of its proper divisors (349404056).

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

290320624 is a wasteful number, since it uses less digits than its factorization.

290320624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5230 (or 5213 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 290320624 is about 17038.7976101602. The cubic root of 290320624 is about 662.1544410771.

The spelling of 290320624 in words is "two hundred ninety million, three hundred twenty thousand, six hundred twenty-four".