2102646 has 32 divisors (see below), whose sum is σ = 5177088. Its totient is φ = 554400.

The previous prime is 2102629. The next prime is 2102647. The reversal of 2102646 is 6462012.

It is a happy number.

It is a super-2 number, since 2×2102646² = 8842240402632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102647) 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, 1380 + ... + 2471.

It is an arithmetic number, because the mean of its divisors is an integer number (161784).

2^2102646 is an apocalyptic number.

2102646 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2102646 is an abundant number, since it is smaller than the sum of its proper divisors (3074442).

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

2102646 is a wasteful number, since it uses less digits than its factorization.

2102646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3876.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2102646 is about 1450.0503439536. The cubic root of 2102646 is about 128.1116782501. Note that the first 3 decimals are identical.

Adding to 2102646 its reverse (6462012), we get a palindrome (8564658).

The spelling of 2102646 in words is "two million, one hundred two thousand, six hundred forty-six".