290240536 has 8 divisors (see below), whose sum is σ = 544201020. Its totient is φ = 145120264.

The previous prime is 290240477. The next prime is 290240537. The reversal of 290240536 is 635042092.

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

It is a junction number, because it is equal to n+sod(n) for n = 290240498 and 290240507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290240537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18140026 + ... + 18140041.

Almost surely, 2^290240536 is an apocalyptic number.

It is an amenable number.

290240536 is a deficient number, since it is larger than the sum of its proper divisors (253960484).

290240536 is a wasteful number, since it uses less digits than its factorization.

290240536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36280073 (or 36280069 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 290240536 is about 17036.4472822241. The cubic root of 290240536 is about 662.0935480533.

The spelling of 290240536 in words is "two hundred ninety million, two hundred forty thousand, five hundred thirty-six".