290606236 has 6 divisors (see below), whose sum is σ = 508560920. Its totient is φ = 145303116.

The previous prime is 290606233. The next prime is 290606287. The reversal of 290606236 is 632606092.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290606233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36325776 + ... + 36325783.

Almost surely, 2^290606236 is an apocalyptic number.

It is an amenable number.

290606236 is a deficient number, since it is larger than the sum of its proper divisors (217954684).

290606236 is a wasteful number, since it uses less digits than its factorization.

290606236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72651563 (or 72651561 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 290606236 is about 17047.1767750557. The cubic root of 290606236 is about 662.3715082953.

The spelling of 290606236 in words is "two hundred ninety million, six hundred six thousand, two hundred thirty-six".