290490136 has 16 divisors (see below), whose sum is σ = 544852800. Its totient is φ = 145196064.

The previous prime is 290490133. The next prime is 290490139. The reversal of 290490136 is 631094092.

It is an interprime number because it is at equal distance from previous prime (290490133) and next prime (290490139).

It is a super-2 number, since 2×290490136² = 168769038226596992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290490131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36570 + ... + 43798.

It is an arithmetic number, because the mean of its divisors is an integer number (34053300).

Almost surely, 2^290490136 is an apocalyptic number.

It is an amenable number.

290490136 is a deficient number, since it is larger than the sum of its proper divisors (254362664).

290490136 is a wasteful number, since it uses less digits than its factorization.

290490136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12258 (or 12254 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 290490136 is about 17043.7711789381. The cubic root of 290490136 is about 662.2832886063.

The spelling of 290490136 in words is "two hundred ninety million, four hundred ninety thousand, one hundred thirty-six".