290128 has 10 divisors (see below), whose sum is σ = 562154. Its totient is φ = 145056.

The previous prime is 290119. The next prime is 290137. The reversal of 290128 is 821092.

It is an interprime number because it is at equal distance from previous prime (290119) and next prime (290137).

It can be written as a sum of positive squares in only one way, i.e., 238144 + 51984 = 488^2 + 228^2 .

It is a junction number, because it is equal to n+sod(n) for n = 290099 and 290108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9051 + ... + 9082.

2²⁹⁰¹²⁸ is an apocalyptic number.

It is an amenable number.

290128 is a deficient number, since it is larger than the sum of its proper divisors (272026).

290128 is a wasteful number, since it uses less digits than its factorization.

290128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18141 (or 18135 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 290128 is about 538.6353126188. The cubic root of 290128 is about 66.2007965026.

The spelling of 290128 in words is "two hundred ninety thousand, one hundred twenty-eight".