2189748 has 48 divisors (see below), whose sum is σ = 5697216. Its totient is φ = 648960.

The previous prime is 2189743. The next prime is 2189767. The reversal of 2189748 is 8479812.

Its product of digits (32256) is a multiple of the sum of its prime factors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189741) 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, 6840 + ... + 7152.

It is an arithmetic number, because the mean of its divisors is an integer number (118692).

2^2189748 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 2189748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2848608).

2189748 is an abundant number, since it is smaller than the sum of its proper divisors (3507468).

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

2189748 is a wasteful number, since it uses less digits than its factorization.

2189748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 382 counting only the distinct ones).

The product of its digits is 32256, while the sum is 39.

The square root of 2189748 is about 1479.7797133357. The cubic root of 2189748 is about 129.8568048530.

Subtracting 2189748 from its reverse (8479812), we obtain a square (6290064 = 2508²).

It can be divided in two parts, 21897 and 48, that added together give a triangular number (21945 = T₂₀₉).

The spelling of 2189748 in words is "two million, one hundred eighty-nine thousand, seven hundred forty-eight".