290618842 has 16 divisors (see below), whose sum is σ = 462623400. Its totient is φ = 136450048.

The previous prime is 290618827. The next prime is 290618843. The reversal of 290618842 is 248816092.

It can be written as a sum of positive squares in 4 ways, for example, as 212314041 + 78304801 = 14571^2 + 8849^2 .

It is a super-2 number, since 2×290618842² = 168918622650841928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 290618795 and 290618804.

It is not an unprimeable number, because it can be changed into a prime (290618843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5748 + ... + 24784.

Almost surely, 2^290618842 is an apocalyptic number.

290618842 is a deficient number, since it is larger than the sum of its proper divisors (172004558).

290618842 is a wasteful number, since it uses less digits than its factorization.

290618842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19505.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 290618842 is about 17047.5465096887. The cubic root of 290618842 is about 662.3810856701.

The spelling of 290618842 in words is "two hundred ninety million, six hundred eighteen thousand, eight hundred forty-two".