2151448 has 32 divisors (see below), whose sum is σ = 4404960. Its totient is φ = 979200.

The previous prime is 2151433. The next prime is 2151451. The reversal of 2151448 is 8441512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14173 + ... + 14323.

It is an arithmetic number, because the mean of its divisors is an integer number (137655).

2^2151448 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 2151448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2202480).

2151448 is an abundant number, since it is smaller than the sum of its proper divisors (2253512).

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

2151448 is a wasteful number, since it uses less digits than its factorization.

2151448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 303 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The square root of 2151448 is about 1466.7815106552. The cubic root of 2151448 is about 129.0952564465.

Subtracting 2151448 from its reverse (8441512), we obtain a square (6290064 = 2508²).

The spelling of 2151448 in words is "two million, one hundred fifty-one thousand, four hundred forty-eight".