2690290 has 8 divisors (see below), whose sum is σ = 4842540. Its totient is φ = 1076112.

The previous prime is 2690263. The next prime is 2690293. The reversal of 2690290 is 920962.

It can be written as a sum of positive squares in 2 ways, for example, as 2686321 + 3969 = 1639^2 + 63^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2690293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134505 + ... + 134524.

2^2690290 is an apocalyptic number.

2690290 is a deficient number, since it is larger than the sum of its proper divisors (2152250).

2690290 is a wasteful number, since it uses less digits than its factorization.

2690290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269036.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 2690290 is about 1640.2103523634. The cubic root of 2690290 is about 139.0805392160.

The spelling of 2690290 in words is "two million, six hundred ninety thousand, two hundred ninety".