2686402 has 12 divisors (see below), whose sum is σ = 4150818. Its totient is φ = 1303200.

The previous prime is 2686393. The next prime is 2686451. The reversal of 2686402 is 2046862.

It can be written as a sum of positive squares in 3 ways, for example, as 123201 + 2563201 = 351^2 + 1601^2 .

It is a d-powerful number, because it can be written as 2 + 6⁶ + 8³ + 6⁷ + 4⁹ + 0 + 2²¹ .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14752 + ... + 14932.

2^2686402 is an apocalyptic number.

2686402 is a deficient number, since it is larger than the sum of its proper divisors (1464416).

2686402 is an equidigital number, since it uses as much as digits as its factorization.

2686402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 2686402 is about 1639.0247100029. The cubic root of 2686402 is about 139.0135073050.

It can be divided in two parts, 268 and 6402, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 2686402 in words is "two million, six hundred eighty-six thousand, four hundred two".