290036385 has 24 divisors (see below), whose sum is σ = 505552320. Its totient is φ = 153817632.

The previous prime is 290036381. The next prime is 290036393. The reversal of 290036385 is 583630092.

290036385 is a `hidden beast` number, since 290 + 0 + 363 + 8 + 5 = 666.

It is not a de Polignac number, because 290036385 - 2² = 290036381 is a prime.

It is a super-2 number, since 2×290036385² = 168242209247736450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (290036381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9949 + ... + 26058.

It is an arithmetic number, because the mean of its divisors is an integer number (21064680).

Almost surely, 2^290036385 is an apocalyptic number.

It is an amenable number.

290036385 is a deficient number, since it is larger than the sum of its proper divisors (215515935).

290036385 is a wasteful number, since it uses less digits than its factorization.

290036385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36197 (or 36194 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 290036385 is about 17030.4546328041. The cubic root of 290036385 is about 661.9382759634.

The spelling of 290036385 in words is "two hundred ninety million, thirty-six thousand, three hundred eighty-five".