2040090 has 32 divisors (see below), whose sum is σ = 5273856. Its totient is φ = 502080.

The previous prime is 2040089. The next prime is 2040097. The reversal of 2040090 is 900402.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2040097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2226 + ... + 3005.

It is an arithmetic number, because the mean of its divisors is an integer number (164808).

2^2040090 is an apocalyptic number.

2040090 is an abundant number, since it is smaller than the sum of its proper divisors (3233766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2040090 is a wasteful number, since it uses less digits than its factorization.

2040090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5254.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2040090 is about 1428.3171916630. The cubic root of 2040090 is about 126.8283791761.

Adding to 2040090 its reverse (900402), we get a palindrome (2940492).

The spelling of 2040090 in words is "two million, forty thousand, ninety".