2129290 has 16 divisors (see below), whose sum is σ = 3888000. Its totient is φ = 839440.

The previous prime is 2129279. The next prime is 2129291. The reversal of 2129290 is 929212.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2129291) 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, 790 + ... + 2209.

It is an arithmetic number, because the mean of its divisors is an integer number (243000).

2^2129290 is an apocalyptic number.

2129290 is a deficient number, since it is larger than the sum of its proper divisors (1758710).

2129290 is a wasteful number, since it uses less digits than its factorization.

2129290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3077.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 2129290 is about 1459.2086896671. The cubic root of 2129290 is about 128.6505374408.

The spelling of 2129290 in words is "two million, one hundred twenty-nine thousand, two hundred ninety".