2920690 has 8 divisors (see below), whose sum is σ = 5257260. Its totient is φ = 1168272.

The previous prime is 2920649. The next prime is 2920691. The reversal of 2920690 is 960292.

It can be written as a sum of positive squares in 2 ways, for example, as 2920681 + 9 = 1709^2 + 3^2 .

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

It is a super-2 number, since 2×2920690² = 17060860152200, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2920691) 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, 146025 + ... + 146044.

2^2920690 is an apocalyptic number.

2920690 is a deficient number, since it is larger than the sum of its proper divisors (2336570).

2920690 is a wasteful number, since it uses less digits than its factorization.

2920690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292076.

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

The square root of 2920690 is about 1709.0026331168. The cubic root of 2920690 is about 142.9426473840.

The spelling of 2920690 in words is "two million, nine hundred twenty thousand, six hundred ninety".