290381427 has 24 divisors (see below), whose sum is σ = 504591360. Its totient is φ = 157198320.

The previous prime is 290381407. The next prime is 290381467. The reversal of 290381427 is 724183092.

It is not a de Polignac number, because 290381427 - 2⁸ = 290381171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 290381391 and 290381400.

It is not an unprimeable number, because it can be changed into a prime (290381407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120099 + ... + 122492.

It is an arithmetic number, because the mean of its divisors is an integer number (21024640).

Almost surely, 2^290381427 is an apocalyptic number.

290381427 is a deficient number, since it is larger than the sum of its proper divisors (214209933).

290381427 is a wasteful number, since it uses less digits than its factorization.

290381427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242623 (or 242620 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 290381427 is about 17040.5817682378. The cubic root of 290381427 is about 662.2006637275.

The spelling of 290381427 in words is "two hundred ninety million, three hundred eighty-one thousand, four hundred twenty-seven".