290947072 has 64 divisors (see below), whose sum is σ = 627563160. Its totient is φ = 134086656.

The previous prime is 290947049. The next prime is 290947081. The reversal of 290947072 is 270749092.

It is a tau number, because it is divible by the number of its divisors (64).

It is an alternating number because its digits alternate between even and odd.

It is a congruent 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, 425643 + ... + 426325.

Almost surely, 2^290947072 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 290947072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313781580).

290947072 is an abundant number, since it is smaller than the sum of its proper divisors (336616088).

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

290947072 is an frugal number, since it uses more digits than its factorization.

290947072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 290947072 is about 17057.1706915303. The cubic root of 290947072 is about 662.6303601074.

The spelling of 290947072 in words is "two hundred ninety million, nine hundred forty-seven thousand, seventy-two".