290425288 has 8 divisors (see below), whose sum is σ = 544547430. Its totient is φ = 145212640.

The previous prime is 290425277. The next prime is 290425309. The reversal of 290425288 is 882524092.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 288932004 + 1493284 = 16998^2 + 1222^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 290425288.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18151573 + ... + 18151588.

Almost surely, 2^290425288 is an apocalyptic number.

It is an amenable number.

290425288 is a deficient number, since it is larger than the sum of its proper divisors (254122142).

290425288 is a wasteful number, since it uses less digits than its factorization.

290425288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36303167 (or 36303163 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 290425288 is about 17041.8686768793. The cubic root of 290425288 is about 662.2340030052.

The spelling of 290425288 in words is "two hundred ninety million, four hundred twenty-five thousand, two hundred eighty-eight".