2102436 has 84 divisors (see below), whose sum is σ = 6365632. Its totient is φ = 594864.

The previous prime is 2102431. The next prime is 2102459. The reversal of 2102436 is 6342012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (84).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102431) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 20361 + ... + 20463.

2^2102436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3182816).

2102436 is an abundant number, since it is smaller than the sum of its proper divisors (4263196).

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

2102436 is a wasteful number, since it uses less digits than its factorization.

2102436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2102436 is about 1449.9779308665. The cubic root of 2102436 is about 128.1074130927.

Adding to 2102436 its reverse (6342012), we get a palindrome (8444448).

The spelling of 2102436 in words is "two million, one hundred two thousand, four hundred thirty-six".