2691020 has 24 divisors (see below), whose sum is σ = 5688144. Its totient is φ = 1069376.

The previous prime is 2691019. The next prime is 2691037. The reversal of 2691020 is 201962.

2691020 = T₂₆₉ + T₂₇₀ + ... + T₃₂₈.

2691020 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 (20).

It is a junction number, because it is equal to n+sod(n) for n = 2690983 and 2691001.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3599 + ... + 4281.

It is an arithmetic number, because the mean of its divisors is an integer number (237006).

2^2691020 is an apocalyptic number.

2691020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2691020 is an abundant number, since it is smaller than the sum of its proper divisors (2997124).

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

2691020 is a wasteful number, since it uses less digits than its factorization.

2691020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 2691020 is about 1640.4328697024. The cubic root of 2691020 is about 139.0931177376.

Adding to 2691020 its reverse (201962), we get a palindrome (2892982).

The spelling of 2691020 in words is "two million, six hundred ninety-one thousand, twenty".