2193436 has 54 divisors (see below), whose sum is σ = 4864608. Its totient is φ = 861840.

The previous prime is 2193421. The next prime is 2193439. The reversal of 2193436 is 6343912.

It is a super-2 number, since 2×2193436² = 9622322972192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a d-powerful number, because it can be written as 2¹¹ + 1 + 9² + 3¹² + 4⁸ + 3¹³ + 6 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2193439) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 70741 + ... + 70771.

2^2193436 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 2193436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2432304).

2193436 is an abundant number, since it is smaller than the sum of its proper divisors (2671172).

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

2193436 is a wasteful number, since it uses less digits than its factorization.

2193436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87 (or 59 counting only the distinct ones).

The product of its digits is 3888, while the sum is 28.

The square root of 2193436 is about 1481.0253205128. The cubic root of 2193436 is about 129.9296660961.

It can be divided in two parts, 219 and 3436, that added together give a triangular number (3655 = T₈₅).

The spelling of 2193436 in words is "two million, one hundred ninety-three thousand, four hundred thirty-six".