290720016 has 100 divisors (see below), whose sum is σ = 850141644. Its totient is φ = 95904000.

The previous prime is 290720011. The next prime is 290720039. The reversal of 290720016 is 610027092.

It can be written as a sum of positive squares in 2 ways, for example, as 246364416 + 44355600 = 15696^2 + 6660^2 .

It is a super-3 number, since 3×290720016³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (290720011) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 129786 + ... + 132006.

Almost surely, 2^290720016 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 290720016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (425070822).

290720016 is an abundant number, since it is smaller than the sum of its proper divisors (559421628).

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

290720016 is a wasteful number, since it uses less digits than its factorization.

290720016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342 (or 2327 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 290720016 is about 17050.5136579518. The cubic root of 290720016 is about 662.4579423164.

The spelling of 290720016 in words is "two hundred ninety million, seven hundred twenty thousand, sixteen".