290222642 has 8 divisors (see below), whose sum is σ = 439822236. Its totient is φ = 143615232.

The previous prime is 290222629. The next prime is 290222729. The reversal of 290222642 is 246222092.

It can be written as a sum of positive squares in 2 ways, for example, as 288966001 + 1256641 = 16999^2 + 1121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×290222642³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747803 + ... + 748190.

Almost surely, 2^290222642 is an apocalyptic number.

290222642 is a deficient number, since it is larger than the sum of its proper divisors (149599594).

290222642 is a wasteful number, since it uses less digits than its factorization.

290222642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496092.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 290222642 is about 17035.9221059501. The cubic root of 290222642 is about 662.0799412411.

The spelling of 290222642 in words is "two hundred ninety million, two hundred twenty-two thousand, six hundred forty-two".