2491210 has 16 divisors (see below), whose sum is σ = 4606056. Its totient is φ = 969408.

The previous prime is 2491207. The next prime is 2491211. The reversal of 2491210 is 121942.

It can be written as a sum of positive squares in 4 ways, for example, as 2455489 + 35721 = 1567^2 + 189^2 .

It is a super-2 number, since 2×2491210² = 12412254528200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2491211) 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, 2997 + ... + 3736.

2^2491210 is an apocalyptic number.

2491210 is a deficient number, since it is larger than the sum of its proper divisors (2114846).

2491210 is a wasteful number, since it uses less digits than its factorization.

2491210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6777.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 2491210 is about 1578.3567404107. The cubic root of 2491210 is about 135.5616291684.

It can be divided in two parts, 2491 and 210, that added together give a triangular number (2701 = T₇₃).

The spelling of 2491210 in words is "two million, four hundred ninety-one thousand, two hundred ten".