290500022 has 4 divisors (see below), whose sum is σ = 435750036. Its totient is φ = 145250010.

The previous prime is 290500019. The next prime is 290500027. The reversal of 290500022 is 220005092.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 290499967 and 290500003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290500027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72625004 + ... + 72625007.

It is an arithmetic number, because the mean of its divisors is an integer number (108937509).

Almost surely, 2^290500022 is an apocalyptic number.

290500022 is a deficient number, since it is larger than the sum of its proper divisors (145250014).

290500022 is a wasteful number, since it uses less digits than its factorization.

290500022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145250013.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 290500022 is about 17044.0611944454. The cubic root of 290500022 is about 662.2908014929.

The spelling of 290500022 in words is "two hundred ninety million, five hundred thousand, twenty-two".