2651790 has 32 divisors (see below), whose sum is σ = 6539040. Its totient is φ = 687744.

The previous prime is 2651783. The next prime is 2651791. The reversal of 2651790 is 971562.

2651790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85 + ... + 2304.

It is an arithmetic number, because the mean of its divisors is an integer number (204345).

2^2651790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2651790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3269520).

2651790 is an abundant number, since it is smaller than the sum of its proper divisors (3887250).

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

2651790 is a wasteful number, since it uses less digits than its factorization.

2651790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 2651790 is about 1628.4317609283. The cubic root of 2651790 is about 138.4139012288.

The spelling of 2651790 in words is "two million, six hundred fifty-one thousand, seven hundred ninety".